" After "3d" -sub level is completely filled,the differentiating electron enters into "

After 3d-su level is completely filled the differentiating electron enters into ….. sub level.

In lanthanides, the differentiating electron enters into

For a p-block element, its 3d, 3s, 3p and 4s orbitals are completely filled and the differentiating electron goes to the 4p orbital. The element should have its atomic number in the range

For actinides the differentiating electron enters ______orbitals.

When 4f level is completely filled with electrons, the next electron will enter into a subshell whose (n+1) is equal to -

The differentiating electron of lanthanides enters in the :