JEE Main · 2013 · 07 Apr 2013 · Offline · p-Block Elements

Which of the following is the wrong statement?

(A) $O_{3}$ molecule is bent✓ Correct
(B)Ozone is violet-black in solid state✓ Correct
(C)Ozone is diamagnetic gas✓ Correct
(D)ONCl and $ONO^{-}$ are not isoelectronic✓ Correct

Answer: (A), (B), (C), (D)

Solution

Checking the four statements one by one: ozone really is bent, because of the lone pair on the central oxygen; solid ozone really is violet-black; ozone really is diamagnetic, with all its electrons paired; and

ONCl

and

ONO X^{-}

really are not isoelectronic, since they carry different electron counts. Every statement is in fact correct, so there is no genuinely wrong option, and the item was treated as a bonus with full credit.

JEE Main · 2013 · 07 Apr 2013 · Offline · Single correct option

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