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Chemistry Essentials Mid-Class Review Flashcards | StudBud
Chemistry Essentials Mid-Class Review
1 / 37
Which of the following represents an electron configuration for a calcium atom, whose atomic number is 20?
A
1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
B
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹
C
1s² 2s² 2p⁶ 3s¹ 3p⁶ 4s³
D
1s² 2s² 2p⁶ 3s¹ 3p⁶ 4s² 3d¹
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