Question

Which of the following electron configurations corresponds to the ground state of an atom of a transition element?
A) 1s22s22p5
B) 1s22s22p63s23p63d104s24p2
C) 1s22s22p63s23p63d64s2
D) 1s22s22p63s23p64s2
E) 1s22s22p63s23p4

Answer

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