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Which of the following pairs of ions is isoelectronic and isostructural?
A
$SO_3^{2-}$, $NO_3^-$
B
$ClO_3^-$, $SO_3^{2-}$
C
$CO_3^{2-}$, $NO_3^-$
D
$ClO_3^-$, $CO_3^{2-}$
Explanation
Equal electron counts and the same VSEPR shape.
Detailed Solution
In $SO_3^{2-}$ and $ClO_3^-$: number of electrons = 42; shape: pyramidal
In $CO_3^{2-}$ and $NO_3^-$: number of electrons = 32; shape: trigonal planar
Note: the source key accepts both '$ClO_3^-$, $SO_3^{2-}$' and '$CO_3^{2-}$, $NO_3^-$'.
In $CO_3^{2-}$ and $NO_3^-$: number of electrons = 32; shape: trigonal planar
Note: the source key accepts both '$ClO_3^-$, $SO_3^{2-}$' and '$CO_3^{2-}$, $NO_3^-$'.