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