${\text{Li}}_{\text{3}}\text{N}\text{+}{\text{H}}_{\text{2}}\text{O}\to \text{A}\left(\text{gas}\right)$
${\text{Li}}_{\text{2}}{\text{CO}}_{\text{3}}\stackrel{\text{Δ}}{\to }\text{B}\left(\text{gas}\right)$
Hybridisation of the central atom in $\text{A}$ and $\text{B}$ respectively.

• Correct answer
  A

  $\text{s}{\text{p}}^3\text{, sp}$
• B

  $\text{s}{\text{p}}^2\text{, s}{\text{p}}^3$
• C

  $\mathrm{s}\mathrm{p},\mathrm{ }\mathrm{s}\mathrm{p}$
• D

  $\text{s}{\text{p}}^3\text{, s}{\text{p}}^3$

Solution

$\mathrm{L}{\mathrm{i}}_3\mathrm{N}+3{\mathrm{H}}_2\mathrm{O}\to 3\mathrm{L}\mathrm{i}\mathrm{O}\mathrm{H}+\mathrm{N}{\mathrm{H}}_3$



$\mathrm{L}{\mathrm{i}}_2\mathrm{C}{\mathrm{O}}_3\stackrel{\hspace{1em}\mathrm{\Delta }\hspace{1em}}{\to }\mathrm{L}{\mathrm{i}}_2\mathrm{O}+\mathrm{C}{\mathrm{O}}_2$

Hence, the correct answer is option: 'A'.