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. The correct order of ability to form ionic compounds among `Na_(+)`, `Mg_(2+)` and `AI_(3+)` is `Al_(3+) gt Mg_(2+) gt Na_(+)`

Answer

(a)

Explanation

In `SF_(6)`, sulphur undergoes `sp^(3)d^(2)` hybridization to form six `sp^(3)d^(2)` hybridised orbitals (of `2e^(-)` each) which contain a total of `12e^(-)`s.
Electronic configuration of 'S' in `SF_(6)` is
The rate of ionic reactions are very high.
According to VSEPR theory, `SnCl_(2)` is an angular structure
The order of ability to form ionic compounds among `Na^(+),Mg^(2+) and Al^(3+)` is `Na^(+) gt Mg^(2+) gt Al^(3+)`.