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How much radius are there in stationa...

How much radius are there in stationary orbitals ?

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`r_(n) = (n^(2)a_(0))/(Z ) = ((52.9)n^(2))/(z) pm `
where n = qunatum number
orbital of electron = energy level
=1.2.3
`a_(0) = 52 .9 pm =-0.0529 nm= 5.29 xx 10^(11)m`
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