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

In which of the following compounds the carbon marked with asterisk is

1.	In which of the following compounds the carbon marked with asterisk is expected to have greatest positive charge?
Answer» `""^()C H_3)-CH_(2)-Cl` `""^()C H_(3)-CH_(2)-Mg^(+)Cl^(-)` `""^()C H_(3)-CH_(2)-Br` `""^()C H_(3)-CH_(2)-CH_(3)` Solution :(A )Cl group attract the ELECTRONS of BOND toward it, due to its electron attracting inductive effect and MAKE theC of `CH_(3)` positive. (B) In `""^()C H_(3)-CH_(2)-Mg^(+)Cl^(-)`, Mg is electropositive so, the repulsion of electron and positive charge of `""^()C" in " ""^()C H_(3)` is decreases (C ) In `""^()C H_(3)-CH_(2)-Br` the STRENGTH of Br(-I) is less than Cl(-I) so, the carbon of `""^()C H_(3)CH_(2)Br` is become less positive (D) Due to (+I) effect, the `-CH_(2)CH_(3)` group of `""^()C H_(3)-CH_(2)-CH_(3)` release the electron and increase the electron density of C in `""^()C H_(3)` The electron density on carbon of `""^()C H_(3)` in `""^(**)C H_(3)-CH_(2)-Cl` is minimum and this carbon is MAXIMUM positive.