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The radius of the second orbit of an electron in hydrogen atom is 2.116 A0. The de-Broglie wavelength associated with this electron in this orbit would be

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By Expert Faculty of Sri Chaitanya
a
6.64 A0
b
1.058A0
c
20116 A0
d
13.28 A0
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detailed solution

Correct option is A

mvr=2h2ππr=hmV=hp=λ,      3.14×2.116=6.64AO


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