A) Hunds rule
B) Aufbaus principle
C) Uncertainty principle
D) Paulis exclusion principle
Correct Answer: D
Solution :
Paulis exclusion principle No two electrons in an atom can have same value of all the four quantum numbers \[eg,\,1{{s}^{2}}\] For 1st electron; \[n=1,\]\[l=0,\]\[m=0,\]\[s=+\frac{1}{2}\] For 2nd electron; \[n=1,\]\[l=0,\]\[m=0,\]\[s=-\frac{1}{2}\]You need to login to perform this action.
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