Q. Which of the following is correct?
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 low.
C) According to VSEPR theory, $SnCI_{2}$ is a linear molecule.
D) The correct order of ability to form ionic compounds among $Na^{+},\ Mg^{2 +}$and$\ Al^{3 +}$ is$\ Al^{3 +} > Mg^{2 +} > Na^{+}$.
Explanation
(a)
$SF_{6}$ does not obey octet rule as in it S-atom has 12 electrons in its valence shell.
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Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.