(Solved): Write ground-state electron configurations for the ions Co3+,Ca2+,P3 and B+. Which do you expect ...

Write ground-state electron configurations for the ions ${\mathrm{Co}}^{3+},{\mathbf{Ca}}^{2+},{\mathbf{P}}^{3-}$ and ${\mathbf{B}}^{+}$. Which do you expect will be paramagnetic due to the presence of unpaired electrons? (Express your answer as a series of orbitals. For example, the electron configuration of Li would be entered in complete form as $1{\mathrm{s}}^2$ $2s^1$ or in condensed form as $[\mathrm{He}]2s^1$.)