Q: Which one of the following is the correct electronic configuration of copper?
(a)1s2 2s2 2p6 3s2 3p6 3d10 4s1
(b)1s2 2s2 2p6 3s2 3p6 3d9 4s2
(c)1s2 2s2 2p6 3s2 3p6 3d10 4s2
(d)1s2 2s2 2p6 3s2 3p6 3d8 4s2
Correct Answer: (a)
The correct answer is (b) '1s2 2s2 2p6 3s2 3p6 3d9 4s2'. This question from the Geography domain tests knowledge of Economic & Mineral Geography.