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Question

Among the following species, the most stable carbonium ion is:

A
C6H5+CHC6H5
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B
C6H5+CH2
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C
CH3+CH2
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D
C6H5CH2+CH2
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Solution

The correct option is A C6H5+CHC6H5
C6H5+CHC6H5 is the most stable carbonium ion as the positive charge is delocalised over two benzene rings.
Note: Greater is the delocalisation of positive charge, greater is the stability of carbocation.

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