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18/08/2021 10:45 am
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If the nitrogen atom had electronic configuration 1s7 it would have energy lower than that of the normal ground state configuration 1s2 2s2 2p3 because the electrons would be closer to the nucleus. Yet 1s7 is not observed. It violates
(a) Heisenberg’s uncertainty principle
(b) Hund’s rule
(c) Pauli exclusion principle
(d) Bohr postulate of stationary orbits
1 Answer
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18/08/2021 10:47 am
Correct answer: (c) Pauli exclusion principle
Explanation:
Not more than two electrons can be present in same atomic orbital. This is Pauli's exclusion principle.