I\'m really confused onwhat to do. I used the formula and plugged in 3 and got 6

Question

I'm really confused onwhat to do. I used the formula and plugged in 3 and got 6.56*10^-7but I don't know if that is correct or even what units my answer isin.


Calulate the wavelengths (in nm) of thevisible lines in the line spectrum of hydrogen using the Rydbergequation (nf = 2; ni = 3, 4, 5, and 6). Use three significant figures andorder from shortest to longest wavelength. I'm really confused onwhat to do. I used the formula and plugged in 3 and got 6.56*10^-7but I don't know if that is correct or even what units my answer isin.


Calulate the wavelengths (in nm) of thevisible lines in the line spectrum of hydrogen using the Rydbergequation (nf = 2; ni = 3, 4, 5, and 6). Use three significant figures andorder from shortest to longest wavelength.

Explanation / Answer

You got the right answer (6.56 *10^-7m)    ...butthe question os asking for the measurements in nm not m. So,convert it into nm....(656nm).    the reason the answer is meters is because you usedthe Rydberg equation to get the engery change (joules). Then you used the equation :   E=hv   tosolve for the frequency. Then you used :   c=(lamda)(nu) to get hewavelength    (6.56*10^-7) but this was inmeters

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