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Which one of the following would require the largest amount of energy to cause dissociation

$\begin{array}{1 1}(a)\;C\equiv C\;in\;C_2H_2\\(b)\; N\equiv N\;in\;N_2\\(c)\;C= C\;in\;C_2H_4\\(d)\;N\equiv N\;in\;N_2H_2\end{array}$

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$N\equiv N\;in\;N_2$ has the highest bond energy.
Hence (b) is the correct answer.
answered Mar 10, 2014 by sreemathi.v

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