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 stability.
(iii) Pauli Exclusion Principle (c) The 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) In the ground state of atoms, orbitals are filled in the order of their increasing energies.

 

Answers (1)
  1. – (c)
  2. – (e)
  3. – (a)
  4. – (d)

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