In 4-f series penultimate shell contain how many electrons ?

In 4-f series anti penultimate shell contains how many electrons ?

In 4-f series outermost shell contains how many electrosn ?

In most of the lanthanides, the penultimate shell contains __________electrons in __________ orbitals.

The outermost shell of a representative element contains x electrons and penultimate shell contains Y electrons. The number of valence electrons could be………

The outer most shell of a representative element contains 'a' electrons and penultimate shell contains 'b' electron. The valency of the element will be

The total number of range of electrons in penultimate shell of d-block elements is :

An f-shell containing 6 unpaired electrons can exchange

In the ground state configuration of Mn, how many electrons are present in 'N' shell ?