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All electrons on the 4p sub-shell must be characterized by the quantum number(s):
(1) n=4, m= 0, s= ± 1/2
(2) l=1
(3) l=0, s= ± 1/2
(4) s= ± 1/2
Ans: l=1
If electron falls from n=3 to n= 2 , then emitted energy is: (1) 10.2ev (2) 12.09 ev (3) 1.9ev (4)0
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