Isoelectronic (same no of electrons)
{ClO}_{3}^{-} & {SO}_{3}^{2-}\Rightarrow 17+24+1=42
and 16+24+2=42
Isostructural (same type of hybridization)
ClO3−⇒H=21(7+1)=4(sp3)
SO32−⇒H=21(6+2)=4(sp3)

NEET UG 2015 — Chemistry Physical Chemistry
Which of the following pairs of iron are isoelectronic and isostructural?
Held on 30 Apr 2015 · Verified 9 Jul 2026.
CO32−,SO32−
ClO3−,CO32−
SO32−,NO3−
ClO3−,SO32−
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