Question: The INCORRECT statement is :
Lithium is least reactive with water among the alkali metals.
LiCl crystallises from aqueous solution as $\mathrm{LiCl} .2 \mathrm{H}_{2} \mathrm{O}$.
Lithium is the strongest reducing agent among the alkali metals.
$\mathrm{LiNO}_{3}$ decomposes on heating to give $\mathrm{LiNO}_{2}$ and $\mathrm{O}_{2}$.
Correct Option: , 4
Solution:
(4) $2 \mathrm{LiNO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{Li}_{2} \mathrm{O}+2 \mathrm{NO}_{2}(\mathrm{~g})+\frac{1}{2} \mathrm{O}_{2}(\mathrm{~g})$
