MCQ
Which of the following is least ionic?
- A$\mathrm{BaCl}_2$
- ✓$\mathrm{AgCl}$
- C$\mathrm{KCl}$
- D$\mathrm{CoCl}_2$
Reason: $\mathrm{Ag}^{+}$has pseudo inert gas configuration.
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(Given : $\Delta_{\mathrm{r}} \mathrm{H}_{298 \mathrm{~K}}^{\circ}=-54.07 \mathrm{~kJ} \mathrm{~mol}^{-1}, \Delta_{\mathrm{I}} \mathrm{S}_{298 \mathrm{~K}}^{\circ}=10 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$ and $\mathrm{R}=8.314 \mathrm{JK}^{-1} \mathrm{~mol}^{-1} ; 2.303 \times 8.314 \times 298=5705$ )
$n$ $l$ $m_1$ $m_2$