Helium (He) — electron configuration — PeriodicTable

Helium (He) — electron configurationHelium has 2 electrons, arranged 1s2. Written on the previous noble gas that is 1s2, and the shells hold 2 electrons from the innermost outwards.Every subshell is either full or empty, so the ground-state atom has no unpaired electron and is diamagnetic. The subshells of Helium in filling order; each orbital holds at most two electrons, of opposite spin.

Subshell

Electrons

Orbitals

1s

2 / 2

1

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