The increasing order of atomic radius for the elements Na, Rb, K and Mg is

Question

The increasing order of atomic radius for the elements Na, Rb, K and Mg is (A)  Na < K < Mg < Rb  (B)  K < Na < Mg < Rb  (C)  Na < Mg < K < Rb  (D)  Mg < Na < K < Rb

Tardigrade Admin · Accepted Answer

Atomic radius increases down the group and decreases from left to right in a period, hence the order of atomic radius is Mg < Na < K < Rb.

Q. The increasing order of atomic radius for the elements $N a, R b, K$ and $M g$ is

$N a < K < M g < R b$

$K < N a < M g < R b$

$N a < M g < K < R b$

$M g < N a < K < R b$

Atomic radius increases down the group and decreases from left to right in a period, hence the order of atomic radius is
$M g < N a < K < R b .$

Q. The increasing order of atomic radius for the elements Na,Rb,K and Mg is

Na<K<Mg<Rb

K<Na<Mg<Rb

Na<Mg<K<Rb

Mg<Na<K<Rb