Q. A metal, $M$ forms chlorides in its +2 and +4 oxidation states. Which of the following statements about these chlorides is correct?
A) $MCl_{2}$ is more volatile than $MCl_{4}$
B) $MCl_{2}$ is more soluble in the anhydrous ethanol than $MCl_{4}$
C) $MCl_{2}$ is more ionic than $MCl_{4}$
D) $MCl_{2}$ is more easily hydrolysed than $MCl_{4}$
Explanation
(c)
$MCl_{2}$ oxidation state of M=+2
$MCl_{4}$ oxidation state of M=+4
Higher the oxidation state, smaller the size.
Greater the polarizing power, greater the covalent characteristics.
Hence, $MCl_{4}$ is more covalent and $MCl_{2}$ is more ionic.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.