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1

AIPMT 2000

MCQ (Single Correct Answer)
d$$\pi $$ $$-$$ p$$\pi $$ bond present in
A
CO32$$-$$
B
PO43-
C
NO3$$-$$
D
NO2$$-$$

Explanation

In PO43–, P atom has vacant d-orbitals, thus it can form p$$\pi $$ - d$$\pi $$ bond. ‘N’ and ‘C’ have no vacant ‘d’ orbital in their valence shell, so they cannot form such bond.

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