Question

Compare the properties of lithium with ather alkali metal​

Answer 1

1. Lithium is the hardest of all the alkali metals.
2. The melting and boiling points of lithium are highest among the group.
3. Lithium form monoxide with oxygen while sodium forms peroxide and other alkali metals form superoxide.
4. Lithium is less reactive and on combustion and like other alkali metals it form nitride along with oxide.
5. Lithium is the strongest reducing agent among the group.
6. Lithium Hydroxide on heating decomposes to form Lithium oxide while other alkali metal hydroxide do not.
7. Lithium does not react with ethyne to form lithium ethynide while all other alkali metals react to form the corresponding alkynides.
8. Chlorides, oxides, phosphates, oxalate and carbonates of lithium are sparingly soluble while that of other metals are freely soluble.
9. Lithium sulphate is the only alkali metal sulphate which does not form double salt.
10. Lithium chloride is highly deliquescent and soluble in alcohol and pyridine.
11. Only Lithium combines with carbon and forms carbide whereas other alkali metals do not react with carbon directly.