Lithium is the strongest reducing agent in aqueous solution. Explain.

Why do alkali metals form ionic compounds?

why is melting point of lithium higher than sodium ?

Why the melting point of sodium is lesser than that of lithium?

Why ionic conductance of alkali metal ions in aqueous solution are in the order:
Li⁺ < Mg + < K⁺ < Rb⁺ < Cs⁺ Explain ?

Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?

Comment on each of the following observations:
 The mobilities of the alkali metal ions in aqueous solution are Li⁺ < Na⁺ < K⁺ < Rb⁺ < Cs⁺

Comment on each of the following observations:
Lithium is the only alkali metal which forms nitride directly.

Lithium forms normal oxide, sodium forms peroxides while K, Rb and Cs form superoxides. Explain. 

'Strenth of the bases increases from LiOH to CsOH'. Comment