Whenever a hydrogen atom emits photon in the Balmer series:

Whenever a hydrogen atom emits a photon in the Balmer series .

Whenever a hydrogen atom emits a photon in the Balmer series

Whenever a hydrogen atom emits a photon in the Balmer series

Whenever a hydrogen atom emits a photon in the Balmer series .

Whenever a hydrogen atom emits a photon in the Balmer series

Whenever a hydrogen atom emits a photon in the Balmer series, it may emit another photon in the Balmer series it must emit another photon in the Lyman series the second photon, if emitted, will have a wavelength of about 122 nm it may emit a second photon, but the wavelength of this photon cannot be predicted