(i) Hund’s Rule (a) No two electrons in an atom can have the same set of four quantum numbers.

Question

Match the following rules with their statements :

Rules	Statements
(i) Hund’s Rule	(a) No two electrons in an atom can have the same set of four quantum numbers.
(ii) Aufbau Principle	b) Half-filled and completely filled orbitals have extra stablity.
(iii) Pauli Exclusion Principle	(c) Pairing of electrons in the orbitals belonging to the same subshell does not take place until each orbital is singly occupied.
(iii) Pauli Exclusion Principle	(d) It is impossible to determine the exact position and exact momentum of a subatomic particle simultaneously.
(iv) Heisenberg’s Uncertainty Principle	(e) In the ground state of atoms, orbitals are filled in the order of their increasing energies.

Answer 1

(i) → (c) (ii) → (e) (iii) → (a) (iv) → (d)