Question

Write the electronic configuration of ${Cu}^{+}$ $(Z=29)$ ion.

Answer 1

${Cu}^{+}(Z=29)$

$Cu-\left[Ne\right]{3s}^2{3p}^6{4s}^1{3d}^{10}$

${Cu}^{+}\Rightarrow Z=28\Rightarrow \left[Ne\right]{3s}^2{3p}^6{4s}^2{3d}^8$.