NEETChemistryd and f Block Elements
What does the variable occupancy of the 4f level in lanthanoid atoms imply?
Options
- AIt can have different numbers of electrons in the 4f level for different lanthanoids.
- BIt always has zero electrons in the 4f level.
- CIt follows the same pattern as the 6s level.
- DIt is unaffected by atomic number.
Correct answer
A. It can have different numbers of electrons in the 4f level for different lanthanoids.
Step-by-step solution
The variable occupancy of the 4f level, indicating that different lanthanoids may have different numbers of electrons in this level.