MCQ
The lanthanoide that would show colour is
- A$Gd^{3+}$
- B$La^{3+}$
- C$Lu^{3+}$
- ✓$Sm^{3+}$
✓
Answer
Correct option: D.
$Sm^{3+}$
d
$Sm^{3+}\,(4f^5) =$ yellow colour, other ions have stable electron configurations with half filled or full-filled electron configuration.
$Sm^{3+}\,(4f^5) =$ yellow colour, other ions have stable electron configurations with half filled or full-filled electron configuration.
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