Chemistry (12th Grade)
Atomic Structure
What is the electron configuration of potassium (K)?
1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹
1s² 2s² 2p⁶ 3s²
1s² 2s² 2p⁶
1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
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