Calculate the wavelength when electron transits.

[YMMMA]

Homework Statement

A photon of wavelength 300nm is emitted from an atom when an electron makes a transition from an energy state of -4 eV to a state of -8 eV. IF the initial state had been at enerygy of -6 eV, the wavelength of the photon emitted in a transition to -8eV is..??

Homework Equations

E=hc/λ

The Attempt at a Solution

I don’t know the basis of this question, but here is my attempt. Since the change in energy from -4eV to -8eV is -4 eV and from -6ev to -8eV is -2, so the energy is halved. If E is halved, then I think λ doubles and the anwer would be 600nm (not sure)

 

[vela]

Apparently you do know the basis of the question since your reasoning is correct.

You can use the relevant equation to guide your thinking about how energy and wavelength are related. If you doubled the wavelength $\lambda$, what would happen to E?

 

[YMMMA]

Apparently you do know the basis of the question since your reasoning is correct.

Oh, great! I wasn’t sure I know that topic well.