(Answered) A hydrogen atom emits a photon as its electron changes from

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A hydrogen atom emits a photon as its electron changes from n = 5 to n = 2. For the H atom, E_n = -2.18E-18*(1/n²) J.

What is the wavelength (in m) of the photon?

( ) m

The number of significant digits is set to 3; the tolerance is +/-1.0%

In what region of the electromagnetic spectrum is this photon found? Please enter the full name of the spectral region - infrared, visible (400-700 nm) or ultraviolet.

( )

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