Question

configuration of copper cr and florine​

Answer 1

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➜So the electron configuration of Cu2+ is: 1s2 2s2 2p6 3s2 3p6 3d9

➜Flourine: [He] 2s2 2p5

Answer 2

Explanation:

note that chromium and copper have 4s1 electron configurations, not 4s2. This is to allow either a half-filled or a filled d sub-shell to be made – Cr has 3d5 4s1 and Cu has 3d10 4s1.

[He] 2s2 2p5

Fluorine/Electron configuration

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