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  • Periodic Table Trends and Structure
  • What is the electron configuration for He?
Multiple choice

What is the electron configuration for He?

  1. 1s22s2

  2. 1s1

  3. 1s2

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Helium (He) has 2 electrons, which fill the 1s orbital completely. The correct configuration is 1s2.

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