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Which of the following are isoelectronic and isostructural?
$N O_{3}^{-}, C O_{3}^{2 -}, C l O_{3}^{-}, S O_{3}$

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$N O_{3}^{-}, C O_{3}^{2 -}$

$S O_{3}, N O_{3}^{-}$

$C l O_{3}^{-}, C O_{3}^{2 -}$

$C O_{3}^{2 -}, C l O_{3}^{-}$

answer is A.

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Detailed Solution

IONIC	NO. OF $e^{-}$	SHAPE
$N O_{3}^{-}$	$7 + 24 + 1 = 32$	TARIANGULAR PLANAR
$C O_{3}^{2 -}$	$6 + 24 + 2 = 32$	TARIANGULAR PLANAR
$C l O_{3}^{-}$	$17 + 24 + 1 = 42$	PYRAMIDAL
$S O_{3}$	$16 + 24 = 40$	TARIANGULAR PLANAR

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