Which rule is violated in the following orbital diagram?

The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Which of the following orbitals has the lowest energy? 4d, 4f, 5s, 5p.

The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Which of the following orbitals has the highest energy> 5p, 5d, 5f, 6s, 6p.

Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

Which of the following is an outer orbital , paramagnetic complex ? (Atomic numbers Fe=26 , Co=27 , Ni=28 )

Assuming that Hund's rule is violated, the bond order and magnetic nature of the diatomic molecule B_2 is : 1 and diamagnetic, 0 and diamagnetic, 1 and paramagnetic, O and paramagnetic.

According to Bohr's atomic theory, angular momentum of an electron in the orbit is quantised. Which among the following cannot be the value of angular momentum in a Bohr orbit.

For an atom or ion having single electron, compare the energies of the following orbitals: S_(1)= a spherically symmetrical orbital having two spherical nodes. S_(2) = an orbital which is double dumb-bell and has no radial node. S_(3) = an orbital with orbital angular momentum zero and three radial nodes. S_(4) = an orbital having one planar and one radial node.