Some pairs of ions are given below. In which pair, first ion is more stable than second?

Options

A. `CH_3-overset(o+)CH-CH_3 and CH_3-overset(o+)CH-OCH_3`
B. `CH_3-CH_2-overset(o+)CH-CH_3 and CH_2=CH-CH_2-overset(o+)(CH_2)`
C.
D. `{:(CH_3-CH-CH_3),(" |"),(CH_2-C_(o+)-CH_3):} and {:(CH_3-N-CH_3),(" |"),(CH_3-C^(o+)-CH_3):} `

Answer

B

Explanation

`underset("by hyper conjugation ")underset(5 alpha-"H stabilises")(CH_3-CH_2-overset(o+)CH-CH_3)gtunderset("double bond so less stable")underset(2alpha-H" &" - I " of ")(CH-CH_2-overset(o+)(CH_2))`