# chemistry

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The electron in the n = 5 level of a hydrogen atom emits a photon with a wavelength of 1280 nm. To what energy level does the electron move?

• chemistry -

1/wavelength = (2.180 x 10^-18/hc)x(1/n1^2-1/n2^2)
n1 = unknown
n2 = 5

• chemistry -

Thank you, sir.

• chemistry -

did you find that electron actually moved or did it stay in place?

• chemistry -

A hydrogen Atom makes a transition between two energy states and emits a photon with a wavelength of 434.2nm. What is the frequency? Does anyone know how to do this?

• chemistry -

3*10^8 / 4.342*10^-7 = frequency (units are seconds^-1)

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