# Chemistry help?

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I got the first part of the problem, but I don't understand what to do with the second.

I got the first part of the problem, but I don't understand what to do with the second.

##### 1 Answer

#### Explanation:

Physicist Rydberg generalized for hydrogen the reciprocal of emission spectrum wavelengths (in a vacuum)

#1/lambda_"vac" = R_"H" * (1/n_"lower" - 1/n_"upper")#

where

#R_"H" = 1/(912 xx 10^(-10) color(white)(l) "m")#

For this particular transition

#n_"upper" = 4# #n_"lower" = 3#

Thus

#1/lambda_"vac" = 1/(912 xx 10^(-10) color(white)(l) "m") * (1/(3^2) - 1/(4^2))#

#color(white)(1/lambda_"vac") ~~ 1.88 xx 10^(-6) color(white)(l) "m"#