Whats the noble gas notation for copper

1 answer:

5 0

Copper has an electron configuration of [Ar] 3d10 4s1. Now sometimes the noble state is written as [Ar] 3d10 4s1 or as [Ar] 4s2 3d9.

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netineya [11]

Answer: 2

Explanation:

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tatuchka [14]

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Serga [27]

Answer:

D. 4

Explanation:

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Which one? Is it both?

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