Question

The polarizability of an anion is directly proportional to its charge
A. True
B. False

Answer 1

Hint:The concept of polarizability is much better explained by Fajan’s rule which explains what will be the nature of a bond formed between an anion and a cation. It states that if two oppositely charged particles are brought together then the nature of the bond formed between them will be decided by the effect of each other onto them.

Complete step by step process:
When two oppositely charged particles come together to form a bond then the polarizability of action will attract the outer electrons towards it which will distort the structure of the anion. Therefore, the polarizability is the ability of an anion to get distorted by the power of the cation. The larger the anion will be, that means its charge density will be less because the same charge would be distributed over a large surface area, which means that cation can easily distort the electronic cloud of the anion. Therefore, this statement is true that polarizability of an anion is directly proportional to its charge and the polarizability also decreases from left to right in a period.

Note: The magnitude of polarizability depends upon various factors such as size of the cation, electronic configuration of the cation, electronegativity difference between the anion and cation, covalent character, reactivity of metals and metalloids, catenation and multiple bonds.