Consider the following statements. (I)Cs' ion is more highly hydrated than other alkali metal ions (II) Among the alkali metals, only lithium forms a stable nitride by direct combination with nitrogen. (III) Among alkali metals, Li,Na,K,Rb, the metal, Rb has the highest melting point (IV) Among alkali metals Li,Na,K,Rb only Li forms peroxide when heated with oxygen.

Consider the following statements. (I)Cs' ion is more highly hydrated

1.	Consider the following statements. (I)Cs' ion is more highly hydrated than other alkali metal ions (II) Among the alkali metals, only lithium forms a stable nitride by direct combination with nitrogen. (III) Among alkali metals, Li,Na,K,Rb, the metal, Rb has the highest melting point (IV) Among alkali metals Li,Na,K,Rb only Li forms peroxide when heated with oxygen.
Answer» I II III IV Answer :B