MCQ
Elements in which $4f$ orbitals are progressively filled are called as
- ATransition elements
- ✓Lanthanides
- CActinides
- DInert gases
✓
Answer
Correct option: B.
Lanthanides
b
In lanthanoids, electrons are progressively filled in $4$ orbital. The general electronic configuration for lanthanoids is $[ Xe ] \,4 f ^{1-14} \,5 d ^{0-1}\, 6 s ^2$
In lanthanoids, electrons are progressively filled in $4$ orbital. The general electronic configuration for lanthanoids is $[ Xe ] \,4 f ^{1-14} \,5 d ^{0-1}\, 6 s ^2$
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