Answer:
Cobalt
Electron configuration
[Ar] 3d7 4s2
Gallium
Ar 3d10 4s2 4p1
Chlorine
[Ne] 3s² 3p⁵
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Answer:
Cobalt
Electron configuration
[Ar] 3d7 4s2
Gallium
Electron configuration
Ar 3d10 4s2 4p1
Chlorine
Electron configuration
[Ne] 3s² 3p⁵