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Electron occupies the available orbital singly before pairing in any one orbital occurs, it is:
(1) Pauli's exclusion principle
(2) Hund's Rule
(3) Heisenberg's principle
(4) Prout's hypothesis
Ans: Hund's Rule
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The two electrons in K sub-shell will differ in : (1)Principal quantum number (2)Azimuthal quantum number (3)Magnetic quantum number (4)Spin quantum number Ans:Spin
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