Gallium Valence Electrons
Why gallium has 3
Gallium has 31 electrons, arranged as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p1. The highest shell is n = 4, holding 4s2 4p1, so 2 + 1 = 3.
Gallium is in group 13; for groups 13–18 subtract 10 from the group number.
What that means for bonding
As a metal, gallium tends to lose valence electrons rather than gain them, forming Ga3+ ions.
Electrons per shell: 2, 8, 18, 3. See the gallium electron configuration and orbital diagram or the full gallium data sheet.
Same group, same count
Gallium valence electrons FAQ
How many valence electrons does gallium have?
Gallium has 3 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p¹, and the outermost shell (n = 4) holds 4s² + 4p¹.
How do you find the valence electrons of gallium?
Gallium is in group 13; for groups 13–18 subtract 10 from the group number.
How many bonds does gallium form?
As a metal, gallium tends to lose valence electrons rather than gain them, forming Ga3+ ions.
What is the Lewis dot structure of gallium?
The symbol Ga with 3 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does gallium have?
28: 31 electrons in total minus the 3 valence electrons.