(a) What is the lanthanide contraction? (b) How does it affectatomic size down a group of transition elements? (c) How doesit influence the densities of the Period 6 transition elements?

Q: give the cause of lanthanide contraction.

A: The long form of the periodic table is a tabular arrangement of all known elements. Here the…

Q: (a) What is the range of oxidation states shown by the ele-ments of Group 5A(15) as you move down…

A: (a)

Q: What are the oxidation states of manganese in the following series of oxides? MnO, MnO2, Mn2O3,…

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Q: (a) Explain the major difference between the number of oxidation states of most transition elements…

A: ANSWER IS :

Q: what are the consequences of lanthanide contraction?

A: Generally, as we move down the periodic table, there is an increase in atomic radii. But in the…

Q: How does the basicity of SnO2 in water compare with that of CO2? Explain.

A: The basicity of SnO2 in water has to be compared with carbon dioxide.

Q: (ii) Arrange the group VII elements in order of increasing oxidizing strength. Explain the trend.…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Which oxide, CrO3 or CrO, is more acidic in water? Why?

A: To determine the nature of oxide whether it is acidic or basic, we have a general observation that…

Q: How do the transition metals in Period 4 affect the pattern ofionization energies in Group 3A(13)?…

A: Concept introduction: Ionization energy: The required energy to remove an outermost electron from a…

Q: What happens when transition metals are oxidized?

A: What happens when transition metals are oxidized?

Q: Which one of the following oxides reacts with bases (alkalis) but does NOT dissolve in water at all?

A: The reactions which are takes place with alkali solution NaOH is

Q: State reasons for the following observations: (i) The enthalpies of atomisation of transition…

A: Transition elements have high effective nuclear charge and a large number of valence electrons.…

Q: Suggest why the fluoride compound in which chromium has its highest oxidation state is CrF6 whereas…

A: The two compounds CrF6 and CrCl4 are given.

Q: Why is beryllium carbonate unusually unstable thermally as compared to the other carbonates of this…

A: Beryllium belongs to group 2 in the periodic table. The carbonates of this group are - BeCO3, MgCO3,…

Q: Draw a molecular orbital diagram to show that CH3 molecule is a o-donor ligand.

A: Molecular orbital is termed as when the atomic orbital of atom overlap, they drop their identity and…

Q: 5. What would you predict about the solubilities of beryllium salts and radium salts relative to the…

A: If we compare the solubility of beryllium salts to the other Group IIA metal salts, we will notice…

Q: An impure magnetite (Fe3O4) sample weighs 0.5023 g. This is converted to Fe2O3 by chemical…

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Q: Dinitrogen is very unreactive, but it can form complexes with transition metals. Explain why and…

A: Nitrogen possess three covalent bonds holds the molecule together which makes Nitrogen gas nearly…

Q: Which lanthanide has the maximum number of unpairedelectrons in both its atom and 3+ ion? Give the…

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Q: Discuss the following with respect to lanthanides: (a) Electronic configurations  (b) Oxidation…

A: (a) Electronic configuration  Lanthanide shows the given general electronic configuration as:-…

Q: Senoff was working with ruthenium-based compounds, and upon discovering a brown compound, proposed…

A: The compound that Senoff discovered is a brown color compound. On the other hand, boron monoxide is…

Q: How does the basicity of SnO₂ in water compare with thatof CO₂? Explain.

A: The molecules given are SnO2 and CO2.

Q: When solid CrO3is dissolved in water, the solution is or-ange rather than the yellow of H2CrO4. How…

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Q: Treatment of cobalt(II) oxide with oxygen at high temperatures gives Co3O4. Write a balanced…

A: Given that the reaction of cobalt(II) oxide with oxygen gives Co3O4. To find: Balanced chemical…

Q: (i) Thermal stability of hydrides of group 16 elements decreases downthe group. Why?(ii) Compare the…

A: i) The thermal stability of the hydrides of group 16 elements decreases down the group, i.e., H2O…

Q: What is the antifluorite structure?

A: In antifluorite structure, the position of the cations and anions are reversed to that of the…

Q: Why do transition metals often react chemically as if they have a valence of 2?

A: the explanation is as follows:

Q: Which oxide, Mn₂O₃ or Mn₂O₇, is more basic in water?Why?

A: An acidic oxide is considered as an oxide that reacts with water to deliver an acid. The basic…

Q: Comment on whether F2 will become a stronger oxidizing agent with increasing H* concentration.

A: The oxidizing ability of any substantial changes with respect to its state i.e. whether it is in…

Q: 1.Which of the following is the principal combustion product of Na metal? a.NaO2 b.Na2O2 c.Na2O…

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Q: (a) Mention the optimum conditions for the industrial manufacture of ammonia by Haber’s process. (b)…

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Q: There have been some predictions that element 114 willbe relatively stable in comparison with many…

A: The electronic configuration for 114 elements can be given as follows: [Rn] 5f14 6d10 7s2 7p2 It is…

Q: Alkaline earth metals are involved in two key diagonal rela-tionships in the periodic table. (a)…

A: (a) Two alkaline earth metals; Be and Mg exhibits diagonal relationship. The pair of elements are…

Q: In the compound K4[Fe(CN)6], the oxidation state of iron and its coordination number, respectively,…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…