Question

elec. configuration of Cu++​

Answer 1

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Write down the electron configuration of the atom, Cu. STEP 2 The ion has a 2+ charge so two electrons are removed. One is taken from the 4s sub-shell, the other from the 3d sub-shell. So the electron configuration of Cu2+ is: 1s2 2s2 2p6 3s2 3p6 3d9.