The element having \([Ar]3d^{10}4s^1\) electronic configuration is
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Copper (Cu) has an electron configuration of \( [Ar] 3d^{10} 4s^1 \), which is an exception to the general electron configuration rule due to stability gained by a filled 3d subshell.
The electron configuration \( [Ar] 3d^{10} 4s^1 \), which signifies an atomic number of 29, identifies Copper (Cu). Step 2: Therefore, option (1) is the correct answer.
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