Question

Match the following:

Element	List - II	Atomic Radius (in pm)
A. Na	I.	152
B. Li	II.	99
C. Cl	III.	64
D. F	IV.	186

• A. 1.A-IV; B-I; C-II; D-III
• B. 2.A-IV; B-III; C-I; D-II
• C. 3.A-III; B-II; C-I; D-IV
• D. 4.A-IV; B-II; C-I; D-III

Hint:

Atomic radii decrease across a period and increase down a group in the periodic table.

Answer 1

The Correct Option is A

From the periodic table, we know the atomic radii of the elements as:
- Na (Sodium) has an atomic radius of 186 pm (IV).
- Li (Lithium) has an atomic radius of 99 pm (I).
- Cl (Chlorine) has an atomic radius of 152 pm (II).
- F (Fluorine) has an atomic radius of 64 pm (III).
Thus, the correct matching is: \[ \text{A - IV, B - I, C - II, D - III} \]