Selenium (Se)

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polyatomic nonmetal

Element #34

SeSymbol
78.97Atomic mass (u)

Electron configuration

[Ar] 3d10 4s2 4p4

Electron shells

K: 2L: 8M: 18N: 6

Atomic structure

2D orbital diagram

K2e⁻L8e⁻M18e⁻N6e⁻Se34

3D interactive model

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