Largest difference in radii is found in case of the pair

Question

Largest difference in radii is found in case of the pair (A) Li, Na (B) Na, K (C) K, Rb (D) Rb, Cs

Tardigrade Admin · Accepted Answer

Atomic as well as ionic radii increases from Li to Fr due to the presence of one extra shell of electron. Li Na K Rb Cs Metallic radii (pm) 152 186 227 248 265

Q. Largest difference in radii is found in case of the pair

Li, Na

Na, K

K, Rb

Rb, Cs

Atomic as well as ionic radii increases from Li to $F r$ due to the presence of one extra shell of electron.

Li Na K Rb Cs

Metallic radii (pm) 152 186 227 248 265