What is the electron configuration of calcium
A) 1s22s22p63s23p64s1 or [Ar]4s1
B) 1s22s22p63s23p6 or [Ar]
C) 1s22s22p63s23p64s3 or [Ar]4s3
D) 1s22s22p63s23p64s2 or [Ar]4s2
E) None of the above
Correct Answer:
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