Which of the following statements is not true | vedclass

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(B) Alkali metals are highly reactive and show specific chemical properties.$1$. Alkali metal nitrates (except $LiNO_3$) decompose on heating to form

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Their chlorides are deliquescent and crystalline as hydrates.

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(B) Alkali metals are highly reactive and show specific chemical properties.$1$. Alkali metal nitrates (except $LiNO_3$) decompose on heating to form nitrites and oxygen $(2MNO_3 \rightarrow 2MNO_2 + O_2)$. $LiNO_3$ decomposes to form $Li_2O$,$NO_2$,and $O_2$.$2$. Alkali metal chlorides (except $LiCl$) are generally not deliquescent and do not form stable hydrates. $LiCl$ is deliquescent and exists as a hydrate $(LiCl \cdot 2H_2O)$. Therefore,the statement that their chlorides are deliquescent and crystalline as hydrates is not true for most alkali metals.$3$. Alkali metals react vigorously with water to form hydroxides and hydrogen gas $(2M + 2H_2O \rightarrow 2MOH + H_2)$.$4$. Alkali metals react with halogens to form ionic halides $(M^{+}X^{-})$.

Which of the following statements is not true for most of the alkali metals?

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