What are the factors that will influence the temperature at which thermal decomposition of the metal peroxides MO, occurs in Group 27 i.stability of the peroxides increases down the group as the radius of the cation increases. ii.lattice enthalpies for the peroxide anion decreases down the group. iii.the ionic character of the compounds increases down the group. iv.the covalent character decreases upward in the group. Select one: a. b. i, iii C. all of the above d. i, ii and iii Which of the following alkali metal is expected to melt at 30°C? Select one: a. Na b. K Rb d. Cs Which statement is not a true representation of the reaction of beryllium and its compounds? Select one: a. BeO dissolves in alkalis b. Be does not react with hot water c. BeCl, is covalent d. Be(NO,), produces BeO on thermal decomposition Which factor makes Li, the strongest reducing agent in aqueous solution? Select one: a. sublimation enthalpy b. ionisation enthalpy C. electron gain enthalpy d. hydration enthalpy Which of the following compounds is expected to have the HIGHEST lattice energy? Select one: a. BaS b. c. LiF

What are the factors that will influence the temperature at which thermal decomposition of the metal peroxides MO, occurs in Group 27 i.stability of the peroxides increases down the group as the radius of the cation increases. ii.lattice enthalpies for the peroxide anion decreases down the group. iii.the ionic character of the compounds increases down the group. iv.the covalent character decreases upward in the group. Select one: a. b. i, iii C. all of the above d. i, ii and iii Which of the following alkali metal is expected to melt at 30°C? Select one: a. Na b. K Rb d. Cs Which statement is not a true representation of the reaction of beryllium and its compounds? Select one: a. BeO dissolves in alkalis b. Be does not react with hot water c. BeCl, is covalent d. Be(NO,), produces BeO on thermal decomposition Which factor makes Li, the strongest reducing agent in aqueous solution? Select one: a. sublimation enthalpy b. ionisation enthalpy C. electron gain enthalpy d. hydration enthalpy Which of the following compounds is expected to have the HIGHEST lattice energy? Select one: a. BaS b. c. LiF

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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