Some Basic Principles Of Organic Chemistry Question 203
Question: Which amongst the following is the most stable carbocation [CBSE PMT 2005]
Options:
A) $ CH_3-\underset{CH_3}{\mathop{\underset{|}{\overset{+}{\mathop{C}}},\ \ \ \ }}, $
B) $ CH_3-\underset{CH_3}{\overset{CH_3}{\mathop{\underset{|\ \ }{\overset{|\ \ }{\mathop{{C^{+}}}}},\ \ }}}, $
C) $ \overset{+}{\mathop{C}},H_3 $
D) $ CH_3\overset{+}{\mathop{C}},H_3 $
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Answer:
Correct Answer: B
Solution:
$ CH_3-\underset{CH_3}{\overset{CH_3}{\mathop{\underset{|,}{\overset{|}{\mathop{{C^{+}}}}},\ \ \ }}}, $ Due to (+I) effect of three methyl group 3° carbocation is more stable.