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If the electronic structure of oxygen at...

If the electronic structure of oxygen atom is written as `1s^2, 2 s^2` it would violate-

A

Hund's rule

B

Pauli's exclusion principle

C

Both Hund's and Pauli's principles

D

None of these

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The correct Answer is:
A
(a) According to this rule pairing of electrons does not take place until all the orbitals of the sub-shell are singly occupied.
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