Multiple choice

Which of the following first row transition metal ions has the highest number of unpaired electrons?

  1. Fe2+

  2. Co2+

  3. Ni2+

  4. Cu2+

  5. Zn2+

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fe2+: [Ar] 3d6; 4 unpaired electrons Among the given first row transition metal ions, Fe2+ has the highest number of unpaired electrons.