MCQ
Smallest ionic radius is:
- A$La^{3+}$
- B$U^{3+}$
- ✓$Yb^{3+}$
- D$Cf^{3+}$
✓
Answer
Correct option: C.
$Yb^{3+}$
Atomic and ionic radius of lanthanides decreases from $La$ to $Lu.$ Due to the contraction of lanthanide the decrease in ionic radius of the element in the lanthanide series from lanthanum to lutetium occurs.
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