2-Methylbutane on reacting with bromine in the presence of sunlight gives mainly

Options

A. 1-bromo-2-methylbutane
B. 2-bromo-2 methylbutane
C. 2-bromo-3-methylbutane
D. 1-bromo-3-methylbutane

Answer

B

Explanation

`H_(2)C - underset(CH_(3))underset(|)overset(@)(CH) - CH_(2) - CH_(3) overset(Br_(2), hv)rarr CH_(3) - underset(CH_(3))underset(|)overset(Br)overset(|)(C) - CH_(2) - CH_(3)`
This is because reactivity order of abstraction of H atom from alkanes is `3^(@) gt 2^(@) gt 1^(@)`.