1. The problem statement, all variables and given/known data Write the electron configuration for Cd 2+. 2. Relevant equations 3. The attempt at a solution [Kr] 4d10 Whenever we remove electrons do we always remove it from the s orbital in that period. So for cadium ion we remove 5s2 correct? But let's say it's Mn 2+ would we remove the electrons from 4s?