MCQ
The correct sequence of increasing covalent character is represent by
- A$LiCl < NaCl < BeCl_2$
- B$BeCl_2 < LiCl < NaCl$
- ✓$NaCl < LiCl < BeCl_2$
- D$BeCl_2 < NaCl < LiCl$
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Product $(P)$ will be

$\left[\right.$ Given $: \mathrm{N}_{\mathrm{A}}=6.02 \times 10^{23}\, \mathrm{~mol}^{-1}$, Atomic mass of $\mathrm{Na}=23.0\, \mathrm{u}]$

$A\xrightarrow{NaN{{O}_{2}}/HCl}B\xrightarrow{KCN}C\xrightarrow{{{H}_{3}}{{O}^{+}}}$ benzoic acid
The compound $ A$ is
