Question

Write the electronic configuration of $X$ ions in the above three compounds.

Answer 1

• $X$ atomic number $=25$ and configuration is $-1s^2,2s^2,2p^6,3s^2,3p^6,3d^5,4s^2$

possible X ions are

$X^{2+}-1s^2,2s^2,2p^6,3s^2,3p^6,3d^5$ $(\because X\to X^{2+}+2e^{-})$

$X^{4+}-1s^2,2s^2,2p^6,3s^2,3p^6,3d^3$ $(\because X\to X^{4+}+4e^{-})$

$X^{7+}-1s^2,2s^2,2p^6,3s^2,3p^6$ $(\because X\to X^{7+}+7e^{-})$