MCQ
In which of the following pairs molecules have bond order three and are isoelectronics
  • $C{N^ - }$, $CO$
  • B
    $N{O^ + },\,\,C{O^ + }$
  • C
    $C{N^ - }$, $O_2^ + $
  • D
    $CO,$ $O_2^ + $

Answer

Correct option: A.
$C{N^ - }$, $CO$
(a) $C{N^ - } = 14$ electrons ; $CO =14$ electrons

$B.O. =$ $\frac{1}{2}[10 - 4] = \frac{6}{2} = 3$.

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