Energy of atomic orbitals in a particular shell is in the order.

The energies of orbitals of H- atom are in the order

Electrons are filled into atomic orbitals in the increasing order of orbital energy level according to ?

The phenomenon of intermixing of atomic orbitals of equal energy which are present in outer shells of atom is called

The number of elliptical orbits, including circular orbits in the M shell of an atom is:

The number of elliptical orbits excluding circular orbits in the N-shell of an atom is