Which of the following ground-state ions has the largest number of unpaired electrons A) Cr²⁺ B) Mn²⁺ C) Ni²⁺ D) Cu⁺ E) Co²⁺

Question

Quizplus · Accepted Answer

Mn^2+ has the largest number of unpaired electrons among the options. In its ground state, manganese has a configuration of [Ar]3d^5 4s^2. When it loses two electrons to become Mn^2+, it has a configuration of [Ar]3d^5, which means all five 3d electrons are unpaired.

Which of the Following Ground-State Ions Has the Largest Number