Multiple choice

Which of the following transition metal ions is expected to form colourless complexes?

  1. Mn2+

  2. Fe3+

  3. Zn2+

  4. Ni2+

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

Zn: 3d10, 4s2 Zn2+: 3d10 In Zn2+, d-orbital is completely filled. So, it will form colourless complexes.