1.

The heat of atomization of \[P{{H}_{3}}(g)\] is \[228\text{ }kcal\text{ }mo{{l}^{-1}}\] and that of \[{{P}_{2}}{{H}_{4}}(g)\] is\[335\text{ }kcal\text{ }mo{{l}^{-1}}\]. The energy of the P-P bond is

A. \[102\text{ }kcal\text{ }mo{{l}^{-1}}\]
B. \[51\text{ }kcal\text{ }mo{{l}^{-1}}\]
C. \[26\text{ }kcal\text{ }mo{{l}^{-1}}\]
D. \[204\text{ }kcal\text{ }mo{{l}^{-1}}\]
Answer» C. \[26\text{ }kcal\text{ }mo{{l}^{-1}}\]


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