Alcohols Phenols And Ethers Question 46
Question: The order of stability of carbonium ions is
[MP PET 1996]
Options:
A) Methyl > ethyl > iso-propyl > tert-butyl
B) Tert-butyl > iso-propyl > ethyl > methyl
C) Iso-propyl > tert-butyl > ethyl > methyl
D) Tert-butyl > ethyl > iso-propyl > methyl
Show Answer
Answer:
Correct Answer: B
Solution:
$ \underset{3^{o}}{\mathop{CH_3-\begin{matrix} CH_3 \\ \underset{|}{\overset{|}{\mathop{{C^{+}}}}} \\ CH_3 \\ \end{matrix} }}>\underset{\begin{smallmatrix} \\ \\ 2^{o} \end{smallmatrix}}{\mathop{CH_3-\overset{+}{\mathop{C}}H}}>\underset{\begin{smallmatrix} \\ \\ 1^{o} \end{smallmatrix}}{\mathop{CH_3\overset{+}{\mathop{C}}H_2}}>\underset{\begin{smallmatrix} \\ Methyl \\ \text{Carbonium ion} \end{smallmatrix}}{\mathop{\overset{+}{\mathop{C}}H_3}} $
BETA
