The correct electronic configuration of Cu+2 is :
Correct answer: D. [Ar] 3d9,4s0
- A. [Ar] 3d9,4s2
- B. [Ar] 3d8,4s2
- C. [Ar] 3d9,4s1
- D. [Ar] 3d9,4s0
Explanation
The electronic configuration of Cu+2 (Copper ion with a +2 charge) can be determined by removing two electrons from the neutral copper atom (Cu). The electronic configuration of a neutral copper atom is: 1s2 2s2 2p6 3s2 3p6 4s1 3d10 When Cu loses two electrons to form Cu+2 , two electrons are removed from the highest energy level, which is the 4s orbital. The resulting electronic configuration of Cu+2 is: 1s2 2s2 2p6 3s2 3p6 3d9 So, the correct electronic configuration of Cu+2 is: 1s2 2s2 2p6 3s2 3p6 3d9 or [Ar] 3d9, 4s0
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