uppose that hydrogen atoms are prepared in the n = 2 energy level. Calculate the wavelength of light emitted by these excited atoms when returning to the ground state.
ANy idea how to do this?

Question

uppose that hydrogen atoms are prepared in the n = 2 energy level. Calculate the wavelength of light emitted by these excited atoms when returning to the ground state. 
ANy idea how to do this?

joannablackwelder · Answer

I would use this formula: $$1/\lambda = R _{H }\left( \frac{ 1 }{ n _{1}^{2} } - \frac{ 1 }{ n _{2} ^{2}}\right)$$

lifeisadangerousgame · Answer

I'm not given lamba though?

lifeisadangerousgame · Answer

Ah wait. I understand.

joannablackwelder · Answer

RH is 1.09678 x 10^-2 nm^-1

joannablackwelder · Answer

Yeah, lambda is what you are looking for. :-)

lifeisadangerousgame · Answer

Okay, so n(sub)1 is 2 and n (sub) 2 is 1 right?

joannablackwelder · Answer

Yep.

lifeisadangerousgame · Answer

Okay, thank you! Could you help me on another one?

lifeisadangerousgame · Answer

I'll make another question so you can get a medal

joannablackwelder · Answer

You're welcome. :-) And I can try.

lifeisadangerousgame · Answer

Hey for this one, I got 1/1.6 x 10^-18 J, is there anyway I can verify if it's correct? If not, you don't need to trouble yourself with working the problem out c:

lifeisadangerousgame · Answer

I got 1/-1.6 x 10^-18J sorry