Q47 / 200 · NEET 2002 · Chemistry

Which of the following is isoelectronic?

A
$\mathrm{CO}_2, \mathrm{NO}_2$
B
$\mathrm{NO}_2^{-}, \mathrm{CO}_2$
Correct answer
C
$\mathrm{CN}^{-}, \mathrm{CO}$
D
$\mathrm{SO}_2, \mathrm{CO}_2$

Solution

In $\mathrm{CN}^{-}$the number of electrons $=6$ $+7+1=14$ In $\mathrm{CO}$ the number of electrons $=6+$ $8=14$

Hence, the correct answer is option: 'C'.

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