Respuesta :
Option (E) None of the above.
The electronic configuration of Cu in ground state is [Ar]3d104s1.
What do we know about electronic configurations?
An element's electron configuration explains how the electrons are dispersed throughout its atomic orbitals. Atomic electron configurations are stated using a standard notation that arranges all electron-containing atomic subshells in a list order, with the number of electrons each shell can house written in superscript. However, the conventional nomenclature frequently results in long electron configurations (especially for elements having a relatively large atomic number). Instead of using the normal notation in some circumstances, a condensed or shortened version may be employed. The series of fully filled subshells that correspond to a noble gas's electronic configuration are substituted in the shortened notation by the gas's symbol enclosed in square brackets.
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