Question

$10,18,36,54$ and $86$ atomic number have all element is:

• A. light metal
• B. inert gas
• C. weak earth metal
• D. halogen

Answer 1

Answer: (B)

The outer shell electronic configuration of atomic number $10,18,36,54$ and $86$ is $n{s}^{2}n{p}^6$ . So that these all element are inert gas,