Chemistry I HW!

Question

What is the wavelength, in nanometers, of the bright line of the hydrogen emission spectrum corresponding to the following transition? n =5 to n =3 

Answer 1

1/λ = R(1/n₁² - 1/n₂²) where n₂ > n₁

λ = wavelength

R = 1.0973x10⁷m^-1

n₁ = 3

n₂ = 5

1/λ = 1.0973x10⁷m^-1 (1/9 - 1/25) = 1.0973x10⁷m^-1 (0.0711)

1/λ = 7.79x10⁵m^-1

λ = 1.28x10^-6 m = 1280 nm

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