Give the name and atomic number of the inert gas atom in which the total number of `d`-electrons is equal to the difference in number to the `p`-and `-s`-electrons.

Explanation

The inert gas atom is krypton (Kr) with Z=36
The electronic configuration , `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(10)4p^(6)`.
No of s-electrons present `=2+2+2+2=8`
No of p-electrons present `=6+6+6=18`
Difference in p and s electrons `=18-8=10`.
No of d-electrons present=10