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The radius of innermost electron orbit of a hydrogen atom is `5.3xx10^(-11)m`. What are the radii of n=2 and n=3 orbits.?

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The radius of innermost electron orbit of a hydrogen atom is `5.3xx10^(-11)m`. What are the radii of n=2 and n=3 orbits.?
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As `rprop n^2 :. r_2=4r_1=4xx5.3xx10^(-11)m=2.12xx10^(-10)m`
and `r_3=9r_1=9xx5.3xx10^(-11)m=4.77xx10^(-10)m`
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