A hydrogen atom initially in the ground ...

A hydrogen atom initially in the ground level absorbs a photon , which excites it to then `n=4` level. Determine the wavelength and frequency of photon.

`8.6xx10^(-7)m`

`9.8xx10^(-8)m`

`7.4xx10^(-8)m`

`8.2xx10^(-8)m`

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