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Question
The element having [Ar] 3d104s1 electronic configuration is ______.
Options
Cu
Zn
Cr
Mn
MCQ
Fill in the Blanks
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Solution
The element having [Ar] 3d104s1 electronic configuration is Cu.
Explanation:
Copper has an atomic number of 29. Its electronic configuration is 1s2 2s2 2p6 3s2 3p6 3d10 4s1, which shows that copper has a completely filled 3d subshell and one electron in the 4s orbital.
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