Doubt from atomic structure

#1

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Q5
How the energy has been given in terms of rydberg constant.
@Shwetanshu_2018

#2

Don’t you think that something is missing over here?! :thinking:
Because Rh= (13.6 X e)/hc
And energy of an electron = (13.6 X e X z²)/n²

And hence n = 3 root ( hc ) which is very less than 1

I think instead of energy if wavelength emitted would have been -Rh/9 then it would have been solvable

#3

Thanks @Shwetanshu_2018 I had the same confusion.

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