How many of these atoms or ions have no unpaired electrons?
N, O, Na^, N³^, Sc

Question

How many of these atoms or ions have no unpaired electrons? N, O, Na ^ , N³ ^ , Sc A)1 B)2 C)3 D)4 E)5

Quizplus · Accepted Answer

N, O, U1P1, U1P1 all have unpaired electrons. NaF, S1S1P0, and F10 have all of their electrons paired. Sc, being a transition metal, has partially filled d orbitals which can lead to unpaired electrons in certain oxidation states, so it is not included in the count of atoms/ions with no unpaired electrons. Therefore, the answer is 2.

How Many of These Atoms or Ions Have No Unpaired