Statement I: In Cl2 molecule the covalent radius is double of the atomic radius of chlorine.

Question

Given two statements below:

Statement I: In Cl₂ molecule the covalent radius is double of the atomic radius of chlorine.

Statement II: Radius of anionic species is always greater than their parent atomic radius.

Choose the most appropriate answer from options given below :

(A) Both Statement I and Statement II are correct.

(B) Both Statement I and Statement II are incorrect.

(C) Statement I is correct but Statement II is incorrect.

(D) Statement I is incorrect but Statement II is correct

Answer 1

Correct answer is (D) Statement I is incorrect but Statement II is correct

In Cl₂ molecule, the covalent radius is half of the internuclear distance, so statement(I) is false. 

For the same element, anion has lower effective nuclear charge than atom ⇒ so anion is larger than atom. ⇒ statement (II) is correct.