What is the Electron Configuration of Cd2+?

[Altec103]

Homework Statement

My question is in regards to Cd2+ and its electron configuration. In its neutral state the configuration is [Kr]4d^10 5s^2. What is it in its 2+ state?

Homework Equations

The Attempt at a Solution

The answer is either [Kr] 4d^8 5s^2 or [Kr] 4d^10 5s^0

The difference between these two is taking it from the 5s level and the 4d level. Which one would you take it from?

 

[Borek]

How do you think, which ones have lower energy and are easier to remove?