[mt2568]

Hey all -

This problem has stumped me for a while so I was wondering if anyone could help out...here's the problem and what I've done so far...

A H atom emits a photon with a frequency of 6.17x10^14 Hz, calculate the energy difference in J between the initial and final state of the H atom.

Now I know the following equations should be involved...
E=-R(z^2/n^2)
E=hv

I first converted the Hz given into joules --> 4.09x10^29 J (this is the final energy I believe?) but i've become stuck because I don't understand how I can find the initial energy with the amount of information I have been given.  Thanks for your time and help guys.

cheers,
matt

[Borek]

I first converted the Hz given into joules --> 4.09x10^29 J

Way too much, unless it was 10^-29. Not that I have checked if it will be correct value, just the order of magnitude will not rise a brow.

but i've become stuck because I don't understand how I can find the initial energy with the amount of information I have been given.  Thanks for your time and help guys.

You don't need initial nor final energy, just the difference. And you have just calculated it (although the result is wrong )