A Possible Set of Quantum Numbers for the Last Electron

Short Answer

A possible set of quantum numbers for the last electron added to complete an atom of gallium (Ga) in its ground state is $\begin{array}{llll}~~~~~\text { n } & l & \mathrm{~m}_{l} & \mathrm{~m}_{5} \\\text { A. } 4 & 0 & 0 & -1 / 2 \\\text { B. } 3 & 1 & 0 & -1 / 2 \\\text { C. } 4 & 1 & 0 & +1 / 2 \\\text { D. } 3 & 1 & 1 & +1 / 2 \\\text { E. } 4 & 2 & 1 & +1 / 2\end{array}$