Which of the following represents an electron
Chapter 3, Problem 3.1.136(choose chapter or problem)
Which of the following represents an electron configuration of a calcium atom, whose atomic number is 20? A. 1s22s22p63s23p64s2 B. 1s22s22p63s23p64s3 C. 1s22s22p63s13p64s23d1 D. 1s22s22p63s23d8
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