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In which set of diatomic molecules is the bond order three

$\begin{array}{1 1}(a)\;CN,N_2\;and\;CO&(b)\;NO,N_2\;and\;CN^- \\(c)\;N_2,O_2\;and\;CO&(d)\;NO^+,N_2\;and\;CN^-\end{array}$

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The bond order of $O_2$=2
The bond order of $N_2$=3
The bond order of $NO$=2.5
The bond order of $NO^+$=3
The bond order of $CN$=2.5
The bond order of $CN^-$=3
Among these molecules $NO^+,N_2$ and $CN^-$ set of molecules bond order is 3.
Hence (d) is the correct answer.
answered Mar 6, 2014 by sreemathi.v
 

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