MCQ
The atomic numbers of elements of second inner transition elements lie in the range of:
- A$88$ to $101$
- B$89$ to $102$
- ✓$90$ to $103$
- D$91$ to $104$
✓
Answer
Correct option: C.
$90$ to $103$
Second inner transition elements are from thorium to lawrencium, i.e., from atomic numbers $90$ to $103.$
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