Single Choice

Li does not resemble with other alkali metals in following properties:

A$$Li_{2}CO_{3}$$ decomposes into oxides while other alkali metal carbonates are thermally stable
BLiCl is predominantly covalent
C$$Li_{3}N$$ is formed, when Li metal is heated with $$N_{2}$$ gas
Dall are correct
Correct Answer

Solution

As lithium is less basic than other alkali metals so lithium carbonate decomposes into its oxide on heating unlike other elements.
$$ Li_{2}CO_{3}\xrightarrow{\Delta}Li_{2}O+CO_{2}$$
Also LiCl is covalent in nature so it doesn't provide any ions in molten state and its molten state is non conductive and due to this nature it dissolves in ether.
Also Li forms $$Li_3N$$ but none other element from group 1 forms a nitride.

SIMILAR QUESTIONS

s - block Elements (Alkali and Alkaline Earth Metals)

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