The set of quantum numbers for the outermost electron for copper in its ground state is ...

Electronic configuration of Cu
${ }_{29}\mathrm{Cu}\to 1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}3{\mathrm{d}}^{10}4{\mathrm{s}}^1$
Outermost electron is in 4s sub-shell
For 4s $\mathrm{n}=4,\mathrm{l}=0,\mathrm{m}=0,\mathrm{s}=+1/2\text{ or }-1/2$