Indium Valence Electrons
Why indium has 3
Indium has 49 electrons, arranged as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p1. The highest shell is n = 5, holding 5s2 5p1, so 2 + 1 = 3.
Indium is in group 13; for groups 13–18 subtract 10 from the group number.
What that means for bonding
As a metal, indium tends to lose valence electrons rather than gain them, forming In3+ ions.
Electrons per shell: 2, 8, 18, 18, 3. See the indium electron configuration and orbital diagram or the full indium data sheet.
Same group, same count
Indium valence electrons FAQ
How many valence electrons does indium have?
Indium has 3 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p¹, and the outermost shell (n = 5) holds 5s² + 5p¹.
How do you find the valence electrons of indium?
Indium is in group 13; for groups 13–18 subtract 10 from the group number.
How many bonds does indium form?
As a metal, indium tends to lose valence electrons rather than gain them, forming In3+ ions.
What is the Lewis dot structure of indium?
The symbol In with 3 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does indium have?
46: 49 electrons in total minus the 3 valence electrons.