JEE Main levelSingle correct optionDifficulty 2 of 3g1128
Assertion (A): The tert-butyl cation is more stable than the isopropyl cation.
Reason (R): The tert-butyl cation has a larger number of hyperconjugative structures than the isopropyl cation.
ABoth Assertion and Reason are true and Reason is the correct explanation of Assertion
BBoth Assertion and Reason are true but Reason is not the correct explanation of Assertion
CAssertion is true but Reason is false
DAssertion is false but Reason is true
Answer: A
Tert-butyl cation has 9 alpha C-H bonds against 6 in isopropyl cation, so it has more hyperconjugative structures and also more +I donors. The Reason correctly explains the Assertion.