Question

Which of the following electron configurations is correct for nickel (atomic number 28)? *

(a) 1s²2s²2p⁶3s²3p⁶4s²3d⁸

(b) 1s²2s²2p⁶3s²3p⁶4s¹3d⁹

(c) 1s²2s²2p⁶3s²3p⁶4s²4d⁸

(d) 1s²2s²2p⁶3s²3p⁶4s⁰4d¹⁰​

Answer 1

Answer:

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I think the answer is option a.1s²2s²2p⁶3s²3p⁶4s²3d⁸