Bismuth Valence Electrons
Why bismuth has 5
Bismuth has 83 electrons, arranged as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p3. The highest shell is n = 6, holding 6s2 6p3, so 2 + 3 = 5.
Bismuth is in group 15; for groups 13–18 subtract 10 from the group number.
What that means for bonding
As a metal, bismuth tends to lose valence electrons rather than gain them, forming Bi3+ ions. Heavy p-block metals often keep their outer s pair and lose only the p electrons (the inert pair effect), which explains the lower charge.
Electrons per shell: 2, 8, 18, 32, 18, 5. See the bismuth electron configuration and orbital diagram or the full bismuth data sheet.
Same group, same count
Bismuth valence electrons FAQ
How many valence electrons does bismuth have?
Bismuth has 5 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p³, and the outermost shell (n = 6) holds 6s² + 6p³.
How do you find the valence electrons of bismuth?
Bismuth is in group 15; for groups 13–18 subtract 10 from the group number.
How many bonds does bismuth form?
As a metal, bismuth tends to lose valence electrons rather than gain them, forming Bi3+ ions. Heavy p-block metals often keep their outer s pair and lose only the p electrons (the inert pair effect), which explains the lower charge.
What is the Lewis dot structure of bismuth?
The symbol Bi with 5 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does bismuth have?
78: 83 electrons in total minus the 5 valence electrons.