MCQ
The isoelectronic pair is
  • A
    $C{l_2}O,\;ICl_2^ - $
  • B
    $ICl_2^ - ,Cl{O_2}\;$
  • C
    $IF_2^ + ,\;I_3^ - $
  • $ClO_2^ - ,\;ClF_2^ + $

Answer

Correct option: D.
$ClO_2^ - ,\;ClF_2^ + $
(d) Number of electrons in $ClO_2^ - = 7 + 6 + 6 + 1 = 20$

Number of electrons in $ClF_2^ + = 7+7+7 -1=20.$

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