Q. Nickel has atomic number 28. Choose the correct electronic configuration for Nickel.
A. 1s2 2s2 2p4 3s2 3p8 3d10
B. 1s2 2s2 2p6 3s2 3p6 3d8 4s2
C. 1s2 2s2 2p4 3s2 3p6 4s2
D. 1s2 2s2 3s2 3p8 3d10
Answer: 1s2 2s2 2p6 3s2 3p6 3d8 4s2
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