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The velocity of electron in inner most o...

The velocity of electron in inner most orbit of hydrogen atom is `2.2xx10^6 m//s`. Use de-Broglie hypothesis to calculate radius of innermost orbit.

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Here, `v=2.2xx10^6m//s`
de-Broglie wavelength associated with this electron,
`lambda=h/(mv)=(6.6xx10^(-34))/((9xx10^(-31))(2.2xx10^6))=0.333xx10^-9m`
If r is radius of the orbit, then according to de-Broglie hypothesis.
`2pir=1lambda , r=lambda/(2pi) =(0.333xx10^-9)/(2xx3.14)=0.53xx10^(-10)m=0.53Å`
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