A) \[25\frac{h}{\pi }\]
B) \[1.0\frac{h}{\pi }\]
C) \[10\frac{h}{\pi }\]
D) \[2.5\frac{h}{\pi }\]
Correct Answer: D
Solution :
Angular momentum of an electron \[=mvr=\frac{nh}{2\pi }\] (n is orbit number) in 5th orbit\[=\frac{5h}{2\pi }=\frac{2.5h}{\pi }\]
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