In which of the following compounds the carbon marked with asterisk is expected to have greatest positive charge ?

Options

A. `""^(**)CH_(3) - CH_(2) - Cl`
B. `""^(**)CH_(3) - CH_(2) - Mg^(+) Cl^(-)`
C. `""^(**)CH_(3) - CH_(2) - Br`
D. `""^(**)CH_(3) - CH_(2) - CH_(3)`

Answer

A

Explanation

Electronegativity of , Cl , Br C and Mg follows the order `Cl gt Br gt C gt Mg`

-I effect of `Cl gt Br`.
Hence `CH_(3) - CH_(2) -Cl` has the greatest positive charge.