1.

Electron enters the sub-shell for which \[(n+l)\] value is minimum. This is enunciated as                 [RPMT 2000]

A.                 Hund?s rule
B.                 Aufbau principle
C.                 Heisenberg uncertainty principle
D.                 Pauli?s exclusion principle
Answer» C.                 Heisenberg uncertainty principle


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