How many sub-shells are present in M-shell ?

How many sub-shell are there in N shell ? How many orbitals are there in d sub-shell ?

How many shells are present in lanthanide

How many sub-levels are there in M shell ? What are their designations?

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

The atomic number of an element M is 26. How many electrons are present in the M-shell of the element in its M^(3+) state

How many electrons are present in the M-shell of an atom of the element with atomic number Z = 24 ?

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

Three elements 'X', 'Y' and 'Z' have atomic numbers 18, 19 and 20 respectively. How many electrons are present in the M shell of these elements?