MCQ
How many stereoisomers possible for


- A$2$
- B$3$
- ✓$4$
- D$5$

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$\frac{1}{2}{P_4}(s) + 3C{l_2}(g) \to 2PC{l_3}(l)\,;$ $\Delta H=-635 \,kJ$
$PC{l_3}(l) + C{l_2}(g) \to PC{l_5}(s)\,;$ $\Delta H=-137\, kJ$
The value of heat of formation of $PCl_5$ is ......$kJ\,mol^{-1}$


$B, C, N, S, O, F, P, Al, Si$