The nitrate of which metal does not give nitrogen dioxide on strong reacting?

The nitrate of which metal does not give nitrogen dioxide on strong reacting?
  1. $\mathrm{Li}$
  2. $\mathrm{Na}$
  3. $\mathrm{Mg}$
  4. $\mathrm{Ca}$

Solution

$\begin{array}{r}\mathrm{LiNO}_3 / \mathrm{Mg}\left(\mathrm{NO}_3\right)_2 / \mathrm{Ca}\left(\mathrm{NO}_3\right) \stackrel{\Delta}{\longrightarrow} \\ \mathrm{Li}_2 \mathrm{O} / \mathrm{MgO} / \mathrm{CaO}+4 \mathrm{NO}_2+\mathrm{O}_2\end{array}$ $\mathrm{NaNO}_3 \stackrel{\Delta}{\longrightarrow} \mathrm{NaNO}_2+\mathrm{O}_2$

Asked in: AP EAMCET 2022 (08 Jul Shift 1)

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