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### Electron Affinity of Beryllium & Magnesium

Posted: Sun Jul 09, 2017 11:30 pm
Why are the electron affinity values for beryllium (Be) and magnesium (Mg) $\leq$ 0?

### Re: Electron Affinity of Beryllium & Magnesium

Posted: Sun Jul 09, 2017 11:39 pm
Beryllium and Magnesium both have full valence sub-shells, which makes them more stable than if they had any more electrons.