- ✓Four $2c$ - $2e$ bonds and two $3c$ - $2e$ bonds
- BTwo $2c$ - $2e$ bonds and four $3c$ - $2e$ bonds
- CTwo $2c$ - $2e$ bonds and two $3c$ - $3e$ bonds
- DFour $2c$ - $2e$ bonds and four $3c$ - $2e$ bonds
$2c - 2e:H - B - H$
$\begin{array}{*{20}{c}}
{^H} \\
{_H}
\end{array}\begin{array}{*{20}{c}}
\backslash \\
/
\end{array}B\begin{array}{*{20}{c}}
/ \\
\backslash
\end{array}_H^H\begin{array}{*{20}{c}}
\backslash \\
/
\end{array}B\begin{array}{*{20}{c}}
/ \\
\backslash
\end{array}_H^H$
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$P = [Ne]\, 3s^23p^3$
$Q = [Ar]\,3d^{10}4s^24p^3$
$R = [He]\,2s^22p^5$
$S = [Ne]\,3s^1$
Incorrect statements is
$\mathrm{Cd}_{(s)}+\mathrm{Hg}_{2} \mathrm{SO}_{4(s)}+\frac{9}{5} \mathrm{H}_{2} \mathrm{O}_{(l)} \rightleftharpoons \mathrm{CdSO}_{4} \cdot \frac{9}{5} \mathrm{H}_{2} \mathrm{O}_{(s)}+2 \mathrm{Hg}_{(l)}$
The value of $\mathrm{E}_{\text {cell }}^{0}$ is $4.315\, \mathrm{~V}$ at $25^{\circ} \mathrm{C}$. If $\Delta \mathrm{H}^{\circ}=-825.2\, \mathrm{~kJ} \,\mathrm{~mol}^{-1}$, the standard entropy change $\Delta \mathrm{S}^{\circ}$ in $\mathrm{J} \,\mathrm{K}^{-1}$ is ........ . (Nearest integer) [Given : Faraday constant $=96487\, \mathrm{C}\, \mathrm{mol}^{-1}$ ]
$A$. have the same energy
$B$. have the minimum overlap
$C$. have same symmetry about the molecular axis
$D$. have different symmetry about the molecular axis
Choose the most appropriate from the options given below: