Which of the following contains the same total number of unpaired electrons as potassium (K)?

Question

Quizplus · Accepted Answer

Potassium (K) has one unpaired electron in its outermost shell. Scandium (Sc) in its ground state also has one unpaired electron in its 3d subshell. Chlorine (Cl) has one unpaired electron in its 3p subshell. Magnesium (Mg) has all electrons paired. Therefore, both Sc and Cl have the same total number of unpaired electrons as potassium, making "more than one response is correct" the right choice.

Which of the Following Contains the Same Total Number of Unpaired