Question
In which of the following compounds the carbon marked with asterisk is expected to have greatest positive charge?
A.
$$\mathop C\limits^ * {H_3} - C{H_2} - Cl$$
B.
$$\mathop C\limits^ * {H_3} - C{H_2} - M{g^ + }C{l^ - }$$
C.
$$\mathop C\limits^ * {H_3} - C{H_2} - Br$$
D.
$$\mathop C\limits^ * {H_3} - C{H_2} - C{H_3}$$
Answer :
$$\mathop C\limits^ * {H_3} - C{H_2} - Cl$$
Solution :
As $$Cl$$ is most electronegative element among $$Cl, Mg, Br$$ and $$C$$ thus, it has greater $$-I$$ effect and the asterisk marked carbon in $$\mathop C\limits^ * {H_3} - C{H_2} - Cl$$ is expected to have greater positive charge.