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The radius of innermost electron orbit o...

The radius of innermost electron orbit of a hydrogen atom is `5.3xx10^(-11)m`. What is the radius of orbit in second excited state?

Text Solution

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`(r_3)/(r_1)=(n_3^2)/(n_1^2)=(3^2)/(1^2)=9`
`:. r_3=9r_1=9xx5.3xx10^(-11)m`
`=4.77xx10^(-10)m`
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