What is the wavelength, in nanometers, of the bright line of the hydrogen emission spectrum corresponding to the following transition? n=4 to n=3

Answer 1

1/λ = R(1/n₁² - 1/n₂²) where n₂ > n₁

R = 1.0973x10⁷m^-1

1/λ = 1.0973x10⁷m^-1 (1/9 - 1/16) = 1.0973x10⁷m^-1 (0.0486)

1/λ = 5.33x10⁵ m^-1

λ = 1.88x10^-6 m

λ = 1880 nm