Question

What is the chief product obtained when n-butane is treated with bromine in the presence of light at `130^@`C
A. `CH_3-CH_2-undersetunderset(CH_3)|CH-Br`
B. `CH_3-undersetunderset(CH_3)|CH-CH_2-Br`
C. `CH_3-undersetunderset(CH_3)|oversetoverset(CH_3)|C-Br`
D. `CH_3-CH_2-CH_2-CH_2-Br`

Answer 1

Correct Answer - A
`CH_3-CH_2-CH_2-CH_3+Br_2 underset(130^@C)overset"light"to underset"(Main product)"underset"2-Bromo butane"(CH_3-undersetunderset(Br)(|)CH-CH_2)-underset"(Minor)"underset"1-Bromobutane"(CH_3+CH_3-CH_2-CH_2-Br)`
2-Bromobutane is the main product because `2^@` carbonium ion is more stable than `1^@`