what is the number of valence electrons in copper (Cu)?

Chemistry
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what is the number of valence electrons ins copper

Jun 2nd, 2015

The electronic configuration of Cu looks like [Ar]4s1 3d10 

Since the 3d shell is filled, it only has 1 in the 4s shell left. So it has one valence electron. 

Please let me know if you have any questions and best me if you are satisfactory.

Jun 2nd, 2015

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