Magnesium Valence Electrons
Why magnesium has 2
Magnesium has 12 electrons, arranged as 1s2 2s2 2p6 3s2. The highest shell is n = 3, holding 3s2, so 2.
Magnesium is in group 2, and groups 1 and 2 have as many valence electrons as their group number.
What that means for bonding
As a metal, magnesium tends to lose valence electrons rather than gain them, forming Mg2+ ions.
Electrons per shell: 2, 8, 2. See the magnesium electron configuration and orbital diagram or the full magnesium data sheet.
Same group, same count
Magnesium valence electrons FAQ
How many valence electrons does magnesium have?
Magnesium has 2 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s², and the outermost shell (n = 3) holds 3s².
How do you find the valence electrons of magnesium?
Magnesium is in group 2, and groups 1 and 2 have as many valence electrons as their group number.
How many bonds does magnesium form?
As a metal, magnesium tends to lose valence electrons rather than gain them, forming Mg2+ ions.
What is the Lewis dot structure of magnesium?
The symbol Mg with 2 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does magnesium have?
10: 12 electrons in total minus the 2 valence electrons.