Multiple choice

Which of the following sets contains colourless aquated transition metal ions only?

  1. Sc3+, Ti3+, Zn2+

  2. Sc3+, Ti4+, Cu2+

  3. Sc3+, Ti4+, Zn2+

  4. Ti3+, V4+, Zn2+

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

Sc3+: 3d0, No unpaired electrons-colourless Ti4+: 3d0, No unpaired electrons-colourless Zn2+: 3d10, No unpaired electrons-colourless