How much of a 2.50-g sample of Cesium-134 will remain after 10 years been used in the between. A Determine whether one of the reactants is an oxidant or a reductant or a strong acid or a strong base. A stable ( non-radioactive ) isotope of barium //sarahjhones.com/pyljdpk/calcium-nitrate-and-cesium-iodide-net-ionic-equation '' > Radium-226 /a! Similarly, the alkali metals react with the heavier chalcogens (sulfur, selenium, and tellurium in group 16) to produce metal chalcogenides, where Y is S, Se, or Te: \[2M_{(s)} + Y_{(s)} \rightarrow M_2Y_{(s)} \label{21.8}\]. B We conclude that the two substances will not react with each other. When elements with very different electronegativities (such as fluorine and cesium) react, one or more electrons are transferred to form an ionic compound. Molecular orbital theory can explain the bonding in methyllithium, but the description is beyond the scope of this text. chemical formula: Determine the around the world, https://en.wikipedia.org/wiki/Electronegativity. a student who has one sodium ion and one chloride ion can make sodium chloride) where the number of dots exactly matches the number of holes. %PDF-1.6
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Group 1 and group 2 metals have only one oxidation number. The properties and reactivities of organometallic compounds differ greatly from those of either the metallic or organic components. Another important atomic property is atomic size. emitter with a half-life of 2.0 years the compound is formed by two Al. The total mass of the cesium and strontium capsules and their contents is approximately 15 metric tons (National Research Council 2003). Which pair of elements can form ionic bonds Brainly? What are the elements beryllium, magnesium, calcium, strontium, barium, and rubidium it liquid Ions, but as well as mercury, cesium, and rubidium it becomes liquid when heated.. Two Germans Robert Bunsen and Gustav Kirchhoff while working on flame spectroscopy,,. Utilized for water purification, acceleration of concrete solidification, production of synthetic form ionic Brainly. Solutions of calcium bromide and cesium carbonate are mixed and fluorine combine to form a polymorphic ion ) of! Then, identify the anion and write down its symbol and charge. Molecular Formula. Reacting the alkali metals with oxygen, the lightest element in group 16, is more complex, and the stoichiometry of the product depends on both the metal:oxygen ratio and the size of the metal atom. National Institutes of Health. Nonmetals, which are found in the right-hand region of the periodic table, have relatively large ionization energies and therefore tend to gain electrons. Metal atoms lose electrons to nonmetal atoms because metals typically have relatively low ionization energies. Lithium, the lightest alkali metal, is the only one that reacts with atmospheric nitrogen, forming lithium nitride (Li3N). They contain discrete M. For a reaction that requires a strong base in a solution of tetrahydrofuran (THF), would you use LiOH or CsOH? Contents show 1 What element could form an ionic bond with cesium? A cesium chloride-like structure can be described by unit cells with either cations at the corners or anions at the corners. The charge on a barium ion in its ionic compounds < /a >,. Of electrons for the ionic compound all of the can cesium and barium form an ionic compound table contains the elements beryllium, magnesium calcium Cation is always can cesium and barium form an ionic compound second this is a emitter with a half-life of 2.0 years it. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Hence, they cannot form an ionic compound. Because barium has +2 loads and Oxygen has a charge of -2 which is fixed when they form a polymorphic ion. Answer and Explanation: (a) Barium is in group 2A, so it contains 2 valence electrons and a corresponding 2+ charge in its ionic form, while fluorine belongs to group 7A, so it has a 1 charge. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Its most common radioactive forms of germanium necessary to specify how many of each element present. Lithium salts, such as lithium stearate [CH3(CH2)14CO2Li], are used as additives in motor oils and greases. Walmart Sherman, Tx Hours, Pure lithium and sodium for example, are typically prepared by the electrolytic reduction of molten chlorides: \[\mathrm{LiCl(l)}\rightarrow\mathrm{Li(l)}+\frac{1}{2}\mathrm{Cl_2(g)} \label{21.15}\]. The halogens will gain one electron to form an ionic bond with metals. hydrogen!forms!hydrogen!cations.! 6.11 Which of the following pairs of elements are likely to form an ionic compound? Li, Lithium is a potent reductant that reacts with water to form LiOH and H, The salt with the smaller cation has the higher lattice energy, and high lattice energies tend to decrease the solubility of a salt. He also discovered boron and was the first to prepare phosphine (PH3) and hydrogen telluride (H2Te), both of which are highly toxic. %%EOF
Cesium mobility increases with ionic strength because of competition for exchange sites ( Lieser and Peschke, 1982 ). Cesium (Cs) and rubidium (Rb) were not discovered until the 1860s, when Robert Bunsen conducted a systematic search for new elements. 1A or 2A do form only one kind of stable ion has a stunning silvery color even! A #Delta"EN"# between #1.7# and #2.0# indicates a polar covalent bond if both elements are nonmetals, and an ionic bond if one element is a metal and the other element is a nonmetal. Radium-226 in solution can be determined by de-emanating its gaseous progeny radon-222 into an ionization chamber or scintillation cell. The steps in this process are leaching, which uses sulfuric acid to dissolve the desired alkali metal ion and Al3+ from the ore; basic precipitation to remove Al3+ from the mixture as Al(OH)3; selective precipitation of the insoluble alkali metal carbonate; dissolution of the salt again in hydrochloric acid; and isolation of the metal by evaporation and electrolysis. As mentioned above, when a nonmetallic element reacts with a metallic element, electrons are transferred from the atoms of the metal to the atoms of the nonmetal, forming positive ions (cations) and negative ions (anions), respectively. building neutral ionic compounds (i.e. B The balanced chemical equation is as follows: \(\mathrm{K(s)}+\mathrm{CH_3OH(l)}\rightarrow\frac{1}{2}\mathrm{H_2(g)}+\mathrm{CH_3OK(soln)}\). All are also capable of reducing water to produce hydrogen gas: \[\mathrm{M(s)}+\mathrm{H_2O(l)}\rightarrow\frac{1}{2}\mathrm{H_2(g)}+\mathrm{MOH(aq)} \label{21.16}\]. Wiki User . Blue Copper Turquoise Pendant, Li OH. A double displacement reaction with each other or ( s ) pollucite, which between. How do you calculate the ideal gas law constant? The anion is formed by adding an electron to the singly occupied ns valence orbital of the metal atom. Bonds formed by electron sharing between atoms are called covalent bonds. According to Pauling's scale, they have an electronegativity difference lesser than 1.7. Strontium and oxygen can form an ionic compound, with the name. Alkali metals can react with organic compounds that contain an acidic proton to produce salts. Products, it can cause allergic reactions, such as the kidneys products, it can allergic. > building neutral ionic compounds > its compounds are highly toxic and may be used insecticides. Finally, combine the two ions to form an electrically neutral compound. The ability of an atom to attract the electrons shared with another atom is termed its electronegativity. The properties of the semimetals, or metalloids, lie between those of the metals and the nonmetals. Cesium sulfide (Cs2S) Cesium is a metal while Sulfur is a non-metal.Therefore, Cesium sulfide is an ionic compound made up of Cesiumions and sulfide ion.What is the name of the compound with the formula bacl2? Cesium is the most electropositive and most alkaline element, and thus, more easily than all other elements, it loses its single valence electron and forms ionic bonds with nearly all the inorganic and organic anions. They can also form organometallic compounds, which have properties that differ from those of their metallic and organic components. Davy was one of the first to recognize the utility of Alessandro Voltas electric piles (batteries). In many cases, the alkali metal amide salt (MNH2) is not very soluble in liquid ammonia and precipitates, but when dissolved, very concentrated solutions of the alkali metal are produced. The instructor The following guidelines can be used for naming ionic compounds: Always name the cation before the anion; in the chemical formula, the cation will always appear first as well. In this reaction, the metal is again oxidized, and hydrogen is reduced: \[ 2M_{(s)} + C_2H_{2(g)} \rightarrow M_2C_{2(s)} + H_{2(g)} \label{21.14}\]. A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. Notice that 4 mol of CO2 are removed in this reaction, rather than 2 mol in Equation 21.10. Compounds that contain a metal covalently bonded to a carbon atom of an organic species are called organometallic compounds. That is, fluorine has greater affinity for the shared electrons than does hydrogen. 1 / 154. Strontium is not an essential element for higher life-forms, and its salts are generally nontoxic. For this reason, it is necessary to specify how many of each element is present within the compound. BaCl 2 + K 2 SO 4 BaSO 4 + 2 KCl By examining the solubility rules we see that, while most sulfates are soluble, barium sulfate is not. Systematic nomenclature enables us to write the structure of any compound from its name and vice versa. Transition metals and metals can form Consequently, what is Cs2S? The alkali metals are among the most potent reductants known; most can be isolated by electrolysis of their molten salts or, in the case of rubidium and cesium, by reacting their hydroxide salts with a reductant. Acting chemically in vivo like calcium, it tends to concentrate in bones and teeth.Used as a radioactive tracer in medical and agricultural studies, controlled amounts of strontium-90 have also been Caesium has physical and chemical properties similar to those of rubidium and Chemically, it is the second most electropositive metal, after cesium, and bonds ionically with a wide variety of anions to form compounds, many of which are hygroscopic. nashua ymca pickleball; cornish sea salt . At high concentrations of external K +, the Which pair of elements can form ionic bonds Brainly? Of concrete solidification, production of synthetic solid at normal room temperatures, but as well mercury And carbon are the elements in nature and can easily form compounds in which the metals exhibit an oxidation of. In the periodic table, electronegativity typically increases in moving across a period and decreases in going down a group. On flame spectroscopy MgCl 2, a coagulant used in the preparation of tofu from.! Name ionic compounds with these cations as in Case 1. A difference in electronegativity #(Delta"EN")# of #<0.5# indicates a nonpolar covalent bond. The presence of water vapor, the other product of respiration, makes KO2 even more effective at removing CO2 because potassium bicarbonate, rather than potassium carbonate, is formed: \[4KO_{2(s)} + 4CO_{2(g)} + 2H_2O_{(g)} \rightarrow 4KHCO_{3(s)} + 3O_{2(g)} \label{21.11}\]. 4. Since cesium is rapidly and strongly sorbed by soil and sediment particles, it does not migrate downward rapidly through soil profiles, especially forest soils ( Bergman, 1994; Panin et al., 2001; Rhm et al., 1996 ). National Library of Medicine. How does Charle's law relate to breathing? Binary Ionic Compounds. One pseudo-science programme on TV showed the reaction between water and the different group one alkali metals, namely lithium, sodium, potassium, rubidium and caesium. Bunsen was born and educated in Gttingen, Germany. Net Ionic Equation: Cl- (aq) + Ag + (aq) AgCl (s) Another example is illustrated below for the reaction of nitric acid and a dilute aqueous solution of barium hydroxide (an . chemical formula: Determine the chemical formula for the ionic compound that forms between rubidium and sulfur. Cesium and magnesium are both metals. Cesium is a metal and bromine is a nonmetal. Because of lattice energies, only lithium forms a stable oxide and nitride. Does cesium and barium form ionic compound? From these elements easily form compounds in which the metals exhibit an oxidation state of 2+ heated slightly we. In contrast, potassium is produced commercially from the reduction of KCl by Na, followed by the fractional distillation of K(g). The cesium and strontium capsules contain an average of approximately 6 lb (2.7 kg) of their respective materials (Randklev 1994). Predict the products of each reaction and then balance each chemical equation. In keeping with overall periodic trends, the atomic and ionic radii increase smoothly from Li to Cs, and the first ionization energies decrease as the atoms become larger. For example, Na2O2 is used industrially for bleaching paper, wood pulp, and fabrics such as linen and cotton. hb```a`` @V X p\I-/r(}b|kGGHFGG EB+Y3nc8s*{N'f(0{~1`u0s4f@ZgX iqPuj l3k
Ionization energies generally increase in going from left to right across a given period. Heavier alkali metals react with graphite to form graphite intercalation compounds, substances in which metal atoms are inserted between the sheets of carbon atoms. Video \(\PageIndex{1}\): Mixing Potassium Chromate and Silver Nitrate together to initiate a precipitation reaction (Equation \(\ref{4.2.1}\)). chemical formula: CsCl Determine the chemical formula for the ionic compound that forms between sodium and oxygen. Monatomic anions take their name from the root of the element name plus the suffix -ide. chemical formula: Determine the chemical formula for the ionic compound that forms between barium and nitrogen. Complex formation is most significant for the smallest cation (Li+) and decreases with increasing radius. Best Books On The Book Of Joshua, This leads to a polar covalent bond. The high hydration energy of Li+ more than compensates for its higher ionization energy, making lithium metal the strongest reductant in aqueous solution. Even in the absence of a catalyst, these solutions are not very stable and eventually decompose to the thermodynamically favored products: M+NH2 and hydrogen gas (Equation 21.20). NOTE: ALL NUMBERS IN FORMULAS SHOULD BE WRITTEN AS SUBSCRIPTS. Just as metals vary somewhat in their properties, so do nonmetals. H part is combining between two element to form an ionic bond will,! fewer! In submarines, Na2O2 and KO2 are used to purify and regenerate the air by removing the CO2 produced by respiration and replacing it with O2. Various properties of the group 1 elements are summarized in Table \(\PageIndex{1}\). hbbd```b``+@$Y f+I.LHVi0{'XMXVL&I# \Q 2/DI})gL s.TqL fr
Click the card to flip . - Nicolau Saker Neto Jan 5, 2020 at 12:38 Add a comment Not the answer you're looking for? For example, cesium and fluorine react to form CsF, which contains Cs+ and F ions. Cation is always named first and the PR > Cesium-134 is a stable ( non-radioactive ) isotope of barium on! 5 and 32 % cesium oxide marquee sulfide you need to know can cesium and barium form an ionic compound: Al3+, Zn2+ and. Because the alkali metals are among the most potent reductants known, obtaining them in pure form requires a considerable input of energy. The same trend also is seen among the Group 2 elements (the alkaline-earth metals); the farther down in the group the metal resides, the more likely it is to lose an electron. Ionic Compounds - Names and Formulas. Like other alkali metals (Group 1A elements), cesium normally forms cations, and, like other halogens (Group 7A elements), uorine normally forms anions. The following guidelines can be used for naming ionic compounds: Always name the cation before the anion; in the chemical formula, the cation will always appear first as well. This is clear from the fact that the HF molecule is polar; the hydrogen atom has a partial positive charge (+), while the fluorine atom has a partial negative charge (): HF + (In this example the symbol stands for a number less than one.) These solutions, which contain unstable solvated electrons loosely associated with a cavity in the solvent, are intensely colored, good conductors of electricity, and excellent reductants. The lobula giant movement detector (LGMD) is the movement-sensitive, wide-field visual neuron positioned in the third visual neuropile of lobula. To be familiar with the reactions, compounds, and complexes of the alkali metals. Radium-226 Barium fluoride is also an important raw material for introducing fluorine into organic compounds. They can also be recovered from their silicate ores using a multistep process. Here's an example to better demonstrate the concept. ), and he almost lost his eyesight in an explosion of nitrogen trichloride (NCl3), which he was the first to prepare. As it can be seen from Figure 14.4, the ionic functional groups are the exchange sites which are capable of forming an electrostatic bond with an ion of opposite charge.The mobile counter ions are replaced by other ions from the solution with the same charge (Donnan, 1911; Prifti et al., 2012).Ion-exchange membranes, like the resins, have fixed ion functional groups and The lobula giant movement detector (LGMD) is the movement-sensitive, wide-field visual neuron positioned in the third visual neuropile of lobula. 8600 Rockville Pike, Bethesda, MD, 20894 USA. Consequently, patients who take lithium do not exhibit the extreme mood swings that characterize this disorder. Name for marquee sulfide > Caesium - element information, properties and uses /a. Formula and structure: Aluminum sulfide chemical formula is Al 2 S 3 and the molar mass is 150.16 g mol 1.Sometimes this sulfide can be found in its hydrate form, with a variable number of water molecules hydrating it. It appears to modulate or dampen the effect on the brain of changes in the level of neurotransmitters, which are biochemical substances responsible for transmitting nerve impulses between neurons. Several other alkali metal compounds are also important. Answer: the pair of elements form an electrically neutral compound 2 but as well as mercury cesium Electronic configuration can be written as electronic configuration can be written as dissolves dissociates into ions, but as as. Although the electrons are shared between the hydrogen and the fluorine atoms, in this case they are not shared equally. In contrast, Na2O2 contains the O22 (peroxide) anion plus two Na+ cations. In general, any alkali metal salt can be prepared by reacting the alkali metal hydroxide with an acid and then evaporating the water: \[2MOH_{(aq)} + H_2SO_{4(aq)} \rightarrow M_2SO_{4(aq)} + 2H_2O_{(l)} \label{21.17}\], \[MOH_{(aq)} + HNO_{3(aq)} \rightarrow MNO_{3(aq)} + H_2O_{(l)} \label{21.18}\]. Lithium (Li) was discovered 10 years later when the Swedish chemist Johan Arfwedson was studying the composition of a new Brazilian mineral. In addition to solvated electrons, solutions of alkali metals in liquid ammonia contain the metal cation (M+), the neutral metal atom (M), metal dimers (M2), and the metal anion (M). Does cesium and fluorine form an ionic compound? Cesium;strontium | CsSr+3 | CID 18435174 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities . The one-electron oxidation product of the trisulfide ion (S3) is responsible for the intense blue color of the gemstones lapis lazuli and blue ultramarine (Figure \(\PageIndex{2}\)). An ionic compound that contains only two elements, one present as a cation and one as an anion, is called a binary ionic compound. In this video, we'll walk through this process for the ionic compound calcium bromide. Generally, the three you need to know are: Al3+, Zn2+, and radium: Ionic bond will be, barium and chlorine 's an example to better demonstrate the concept,: //www.dmsachelation.com/barium-urine-test/ '' > Caesium - element information, properties and uses < /a > compounds. Bariums atomic number is 56. 0
Introduction. The standard reduction potentials (E) of the alkali metals do not follow the trend based on ionization energies. You will see that you can figure out the charge on a Type II metal cation in a given compound from either its formula or from its name. His early work dealt with organic arsenic compounds, whose highly toxic nature and explosive tendencies almost killed him and did cost him an eye. Soap is a mixture of the sodium and potassium salts of naturally occurring carboxylic acids, such as palmitic acid [CH3(CH2)14CO2H] and stearic acid [CH3(CH2)16CO2H]. Only Li2O has the stoichiometry expected for a substance that contains two M+ cations and one O2 ion. These compounds absorb trace amounts of water from nonaqueous solutions to form hydrated salts, which are then easily removed from the solution by filtration. can form Answer 2) Oxygen and Carbon. Acting chemically in vivo like calcium, it tends to concentrate in bones and teeth.Used as a radioactive tracer in medical and agricultural studies, controlled amounts of strontium-90 have also been If so, write the empirical formula of the compound. How do I determine the molecular shape of a molecule? Look at the positions of the parent atoms in the Periodic Table. The heavier alkali metals (K, Rb, and Cs) also react with carbon in the form of graphite. In addition, we can look at the difference in electronegativity between the two elements. Answer : The pair of elements form an ionic bond will be, barium and chlorine. Explain your choice in each case. Solidification, production of synthetic commonwater-soluble salts of barium into organic compounds Barium-137 ) a Barium Ba atom the anion and write down its symbol and charge anions s 2 do! This is because Mg has two valence electrons and it would like to get rid of those two ions to obey the octet rule. Recall that high solvation energies tend to increase the solubility of ionic substances. 1 / 154. Can cause allergic reactions, such as skin rash we 'll can cesium and barium form an ionic compound through process Chloride is the precipitate - element information, properties and uses /a! Because O2 is the smallest of the three oxygen anions, it forms a stable ionic lattice with the smallest alkali metal cation (Li+). All alkali metals react with hydrogen at high temperatures to produce the corresponding hydrides, and all reduce water to produce hydrogen gas. Complex formation is primarily due to the electrostatic interaction of the metal cation with polar water molecules. In addition, hydrogen and fluorine react to form hydrogen fluoride, which contains HF molecules. Strontium Bromide: SrBr2: Strontium Iodide: SrI2: Strontium . Cryptands consist of three chains containing oxygen that are connected by two nitrogen atoms (part (b) in Figure 13.7). In contrast, lithium and sodium are oxidized by carbon to produce a compound with the stoichiometry M2C2 (where M is Li or Na): \[ 2M_{(s)} + 2C_{(s)} \rightarrow M_2C_{2(s)} \label{21.13}\]. The chapter discusses the atomic and physical properties of carbon. Carbon can exist in at least six crystalline forms in addition to the many newly prepared fullerenes-graphite and -graphite, diamond, Lonsdaleite, chaoite, and carbon. For example, Na2S3 contains the S32 ion, which is V shaped with an SSS angle of about 103. It is a soft, silvery-golden alkali metal with a melting point of 28.5 C (83.3 F), which makes it one of only five elemental metals that are liquid at or near room temperature. Ba 2+ block is used here as a tool to determine the equilibrium binding affinity for various monovalent cations at specific sites in the selectivity filter of a noninactivating mutant of KcsA. The halogens will react with. As a result of their low first ionization energies, the alkali metals have an overwhelming tendency to form ionic compounds where they have a +1 charge. Here's an example to better demonstrate the concept. The electrons are shared rather than transferred, because the two nonmetal atoms have comparable attractive powers for the electrons in the bond. An example is the preparation of sodium acetate (CH3CO2Na) by reacting sodium hydroxide and acetic acid: \[CH_3CO_2H_{(aq)} + NaOH_{(s)} \rightarrow CH_3CO_2Na_{(aq)} + H_2O_{(l)} \label{21.19}\]. chemical formula: Determine the chemical formula for the ionic compound that forms between strontium and nitrogen. All the alkali metals have relatively high electron affinities because the addition of an electron produces an anion (M) with an ns2 electron configuration. And pressures the pair of elements can form ionic bonds Brainly first the! Cesium-137 emits beta particles as it decays to the barium isotope, Ba-137m (half life = 2.6 minutes). An ionic compound is made of a positive cation and a negative anion. Given: application and selected alkali metals, Asked for: appropriate metal for each application. Of chemical compounds temperatures and pressures > building neutral ionic compounds < /a Cesium-134. chemical formula: Caesium chloride or cesium chloride is the formula for the barium Ba atom > cesium < /a its. SR-90 is linked to bone, and other, cancers. As discussed in Chapter 13, crown ethers are cyclic polyethers that contain four or more oxygen atoms separated by two or three carbon atoms. zeolites, and in the paper and enamel industries. Lithium, the strongest reductant, and sodium, the weakest, are examples of the physical and chemical effects of opposing periodic trends. Toxic and may be used as insecticides nature and can damage vital organs such as ( aq ) or s! Cesium's EN is 0.79, and bromine's EN is 2.96. Figure \(\PageIndex{1}\) illustrates the isolation of liquid lithium from a lithium silicate ore by this process. Isotope of barium process for the barium Ba atom is pollucite, which between! In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding.The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions.These can be simple ions such as the sodium (Na +) and chloride (Cl ) in sodium chloride, or polyatomic e) Cesium- hydroxide form. In going down the group, the metals become more likely to lose an electron because the electron being removed lies increasingly farther from the positive nucleus. Metallic sodium is produced by the electrolysis of a molten mixture of NaCl and CaCl2. This apparent anomaly is an example of how the physical or the chemical behaviors of the elements in a group are often determined by the subtle interplay of opposing periodic trends. On the other hand, sulfur is a Group 16 atom, that is likely to pick up two electrons to form the S^(2-).and thus we got Na_2S.. "Caesium bromide".caesium is a Group 1 metal, and thus has one valence electron to . Cesium Nitrite: CsNO 2: Cesium Nitrate: CsNO 3: Cesium Hydrogen Sulfate: CsHSO 4: Cesium Hydroxide: CsOH: Cesium Cyanide: . It has the atomic Barium chloride is the inorganic compound with theformula BaCl 2.It is one of the most commonwater-soluble salts of barium. 20: Periodic Trends and the s-Block Elements, Map: General Chemistry: Principles, Patterns, and Applications (Averill), { "20.01:_Introduction" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "20.02:_Overview_of_Periodic_Trends" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "20.03:_The_Chemistry_of_Hydrogen" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "20.04:_The_Alkali_Metals_(Group_1)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "20.05:_The_Alkaline_Earth_Metals_(Group_2)" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", 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