Question

Compounds of Sc3+ are not colored, but those of Ti3+ and V3+ are. Why? 1. Sc3+ is a stable cation. 2. Ti3+ and V3+ are not stable cations. 3. Sc3+ has no electrons in d orbitals. 4. Ti3+ and V3+ have d electrons present. 5. Sc3+ is not a stable cation. 6. Ti3+ and V3+ are stable cations. 7. Sc3+ has one electron in d orbitals. 8. Ti3+ and V3+ have two d electrons present.

Answer 1

3

Step-by-step explanation:

Scandium has no electron on the d orbital. Remember that transition metals have partially filled d orbital and have the ability to form coloured ion