Q.1. Explain why [BF6] -3 is not formed but [AlF6] -3 is formed.
Q.2. What is catenation?
Q.3. What is the structure of Borane.
Q.4. Why lithium reacts less vigorously in water?
Q.5. Which element has strongest reducing character among alkali metals
Q.6. What is the trend of ionization enthalpy in Group-I elements down the group?
Q.7. Why LiF is less soluble among other alkali metal halides?
Q.8. When sodium is dissolved in liquid ammonia a blue color solution is formed. What is the
reason behind it.?
Q.9. What is the trend of solubility of hydroxides of alkaline earth metals
Q.10.What is meant by hard water?
Q.11.Why Li compounds are soluble in organic solvents?
Q.12. Why calcium carbonate is used instead of ammonium carbonate as source of carbonate
in Solvay process?
Q.13. What is the oxidation state of O atom in ??2
Q.14. Why Be and Mg do not give flame test?
Q.15. Why BeCl2 has polymer like structure in solid state?
Q.16. Give an example of amphoteric oxide
Q.17. What is the reason for the formation of milky white precipitate when carbon dioxide is
passed through aqueous solution of CaO?
Q.18. Comment on the stability of oxosalts of group-I and group-II elements.
Q.19. Compare the tendency to form ionic and covalent compounds by Group-I and group-II
Q.20.Comment on the melting point and boiling point of alkali metal.