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