1.

In terms of Bohr radius a, the radius of the second Bohr orbit of a hydrogen atom is given by …………

Answer»

`4a_(0)`
`8a_(0)`
`sqrt2a_(0)`
`2a_(0)`

Solution :RADIUS in `N^(TH)` orbit `r_(n)propn^(2)` here n=2
`:.(r_(2))/(r_(1))=((2)^(2))/((1)^(2))`
`(r_(2))/(a_(0))=4`
`:.r_(2)=4a_(0)`


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