the bright red line from the emission spectrum of hyrogen has a wave lngth of 657 nm. what is the energy, in joules, of a single photon of this light

the bright red line from the emission spectrum of hyrogen has a wave lngth of 657 nm. what is the energy, in joules, of a single photon of this light

 

Wavelength=c/v, where c=speed of light, v=frequency

v=c/w=3 X 10^8/6.57 X 10^-7

v=4.566 X 10^14 Hertz

E=hv, where h is Planck's constant, v is the frequency

E=6.63 X 10^-34 X 4.566 X 10^14

E=3.0274 X 10^-19 Joules- the energy of a single photon