allanfrenchie2915 allanfrenchie2915 07-03-2024 Chemistry contestada 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