# Electron configuration of ions - 4 | Periodic Trends of the Elements

Give the ground state electron configuration for a Pd2+ ion.

What neutral atom is a Pd2+ ion isoelectronic with?

Pd: Z = 46 ⇒ 1s2s2p3s3p4s3d10 4p5s4d8

Pd2+ ⇒ 1s2s2p3s3p4s3d10 4p5s4d8 ⇒ 44 electrons

Ruthenium Ru (Z = 44) is isoelectronic with Pd2+