allanfrenchie2915 allanfrenchie2915

07-03-2024
Chemistry

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Write the electron configuration of Calcium (atomic number = 20).
A) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
B) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s²
C) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s¹
D) 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s²

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