Question

One of the electron transitions in a hydrogen atom produces infrared light with a wavelength of 7.464 x 10^-6 m. What amount of energy causes this transition?

Answer 1

Try this formula: \(E=\frac{hc}{\lambda}=h\nu\).
h is the Planck's constant, \(6.626\times 10^{-34}\).
c is speed of light, \(3\times 10^8\).
\(\lambda\) is the wavelength.
\(\nu\) is the frequency.
In this case, try the first one.