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Match the following species with their corresponding ground state electronic configuration.

Atom / Ion Electronic configuration
(i) Cu (a) 1s2 2s2 2p6 3s2 3p6 3d10
(ii) Cu^2+ (b) 1s2 2s2 2p6 3s2 3p6 3d10 4s2
(iii) Zn^2+ (c) 1s2 2s2 2p6 3s2 3p6 3d10 4s1
(iv) Cr^3+ (d) 1s2 2s2 2p6 3s2 3p6 3d9
(e) 1s2 2s2 2p6 3s2 3p6 3d3


(i) Electronic configuration of Cu= 2,8,18,1 i.e. 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹
(ii) Electronic configuration of Cu²⁺=2,8,17 i.e. 1s²2s²2p⁶3s²3p⁶3d⁹
(iii) Electronic Configuration of Zn²⁺=2,8,18,2 i.e. 1s²2s²2p⁶3s²3p⁶3d¹⁰
(iii)Electronic Configuration of Cr³⁺=2,8,8,3 i.e. 1s²2s²2p⁶3s²3p⁶4d³
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In the (iv) part it is 4s^3 not 4d^3, apologies.
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