Strontium Valence Electrons
Why strontium has 2
Strontium has 38 electrons, arranged as 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2. The highest shell is n = 5, holding 5s2, so 2.
Strontium 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, strontium tends to lose valence electrons rather than gain them, forming Sr2+ ions.
Electrons per shell: 2, 8, 18, 8, 2. See the strontium electron configuration and orbital diagram or the full strontium data sheet.
Same group, same count
Strontium valence electrons FAQ
How many valence electrons does strontium have?
Strontium has 2 valence electrons. Its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 5s², and the outermost shell (n = 5) holds 5s².
How do you find the valence electrons of strontium?
Strontium is in group 2, and groups 1 and 2 have as many valence electrons as their group number.
How many bonds does strontium form?
As a metal, strontium tends to lose valence electrons rather than gain them, forming Sr2+ ions.
What is the Lewis dot structure of strontium?
The symbol Sr with 2 dots around it, one per valence electron, placed singly on each side before any side is paired.
How many core electrons does strontium have?
36: 38 electrons in total minus the 2 valence electrons.