JEE Main Chemistry question

A metal, forms chlorides in its +2 and +4 oxidation states. Which of the following statements about these chlorides is correct? [AIEEE 2006]

(A) is more volatile than
(B) is more soluble in anhydrous ethanol than
(C) is more ionic than Correct
(D) is more easily hydrolysed than

Answer: (C)

Solution

In the lower (+2) oxidation state the metal ion is larger and less polarising, giving more ionic character, while in the higher (+4) state the smaller, more highly charged cation polarises the chloride more strongly (Fajans' rule), giving greater covalent

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Question ID VK-138293