C-03-Q193mediumsingle_mcqThe actual electronic configuration of Cu\ce{Cu}Cu (Z=29Z = 29Z=29) is:a1s2 2s2 2p6 3s2 3p6 3d9 4s21s^2\,2s^2\,2p^6\,3s^2\,3p^6\,3d^9\,4s^21s22s22p63s23p63d94s2b1s2 2s2 2p6 3s2 3p6 3d10 4s11s^2\,2s^2\,2p^6\,3s^2\,3p^6\,3d^{10}\,4s^11s22s22p63s23p63d104s1c1s2 2s2 2p6 3s2 3p6 4s2 3d91s^2\,2s^2\,2p^6\,3s^2\,3p^6\,4s^2\,3d^91s22s22p63s23p64s23d9d1s2 2s2 2p6 3s2 3p6 3d7 4s21s^2\,2s^2\,2p^6\,3s^2\,3p^6\,3d^7\,4s^21s22s22p63s23p63d74s2