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Question

Which of the following pairs is/are correctly matched?

I. Carbocation electrophile

II. Free radical paramagnetic

III. Carbene incomplete octet

IV. Carbanion incomplete octet

Select the correct answer using the codes given below:

A
Only I
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B
I and II
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C
I, II, III and IV
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D
I, II and III
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Solution

The correct option is D I, II and III
Carbocations are positive charge species with incomplete octets so they are electrophiles.

Free radicals have one unpaired electron so they are paramagnetic in nature.

Carbene has an incomplete octet of carbon but carbanion has a complete octet of carbon.

Hence, the correct option is D.

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