Tin Valence Electrons
Why tin has 4
Tin has 50 electrons, arranged as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p2. The highest shell is n = 5, holding 5s2 5p2, so 2 + 2 = 4.
Tin is in group 14; for groups 13–18 subtract 10 from the group number.
What that means for bonding
As a metal, tin tends to lose valence electrons rather than gain them, forming Sn2+ or Sn4+ 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, 18, 4. See the tin electron configuration and orbital diagram or the full tin data sheet.
Same group, same count
Tin valence electrons FAQ
How many valence electrons does tin have?
Tin has 4 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p², and the outermost shell (n = 5) holds 5s² + 5p².
How do you find the valence electrons of tin?
Tin is in group 14; for groups 13–18 subtract 10 from the group number.
How many bonds does tin form?
As a metal, tin tends to lose valence electrons rather than gain them, forming Sn2+ or Sn4+ 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 tin?
The symbol Sn with 4 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does tin have?
46: 50 electrons in total minus the 4 valence electrons.