Barium Valence Electrons
Why barium has 2
Barium has 56 electrons, arranged as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 6s2. The highest shell is n = 6, holding 6s2, so 2.
Barium 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, barium tends to lose valence electrons rather than gain them, forming Ba2+ ions.
Electrons per shell: 2, 8, 18, 18, 8, 2. See the barium electron configuration and orbital diagram or the full barium data sheet.
Same group, same count
Barium valence electrons FAQ
How many valence electrons does barium have?
Barium has 2 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 6s², and the outermost shell (n = 6) holds 6s².
How do you find the valence electrons of barium?
Barium is in group 2, and groups 1 and 2 have as many valence electrons as their group number.
How many bonds does barium form?
As a metal, barium tends to lose valence electrons rather than gain them, forming Ba2+ ions.
What is the Lewis dot structure of barium?
The symbol Ba with 2 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does barium have?
54: 56 electrons in total minus the 2 valence electrons.