- A$n = 4,\,l = 3,\,m = - 2,\,s = 0$
- B$n = 4,\,l = 4,\,m = + 2,\,s = - \frac{1}{2}$
- C$n = 4,\,l = 4,\,m = - 2,\,s = + \frac{1}{2}$
- ✓$n = 4,\,l = 3,\,m = - 2,\,s = + \frac{1}{2}$
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$C{H_3}C{H_2}C{H_2}OH \xrightarrow{PCl_3}A\xrightarrow{Alco.KOH}B$

$\begin{array}{*{20}{c}}
{C{H_3} - CH - CH - C{H_3}\xleftarrow[{ether}]{{Na}}R\,' - Br\,\xrightarrow{{Mg}}'D'\,\xrightarrow{{{H_2}O}}E} \\
{\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,C{H_3}\,\,\,\,\,C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$