Which of the following is correct ?

Options

A. the number of electrons present in the valence shell of S in `SF_6` is 12
B. the rates of ionic reactions are very slow
C. according to VSEPR theory, `SnCl_2` is a linear molecule
D. correct order of ability to form ionic compounds is `Al^(3+) gt Mg^(2+) gt Na^(+)`

Answer

A