Photon of the lowest wavelength is related to:

Explanation

Option A is correct.The photon of the lowest wavelength is related to the Balmer series. The Balmer series is a spectral series in which photons are emitted when an electron in a hydrogen atom transitions from an energy level with a principal quantum number greater than 2 to the energy level with a principal quantum number of 2. The wavelength of the emitted photon is inversely proportional to the difference in energy between the two energy levels. The lowest wavelength in the Balmer series is known as the Balmer alpha line, which has a wavelength of 656.3 nm. This is the wavelength of the photon that is emitted when an electron in a hydrogen atom transitions from the third energy level to the second energy level. The Paschen series corresponds to transitions between the third energy level (n = 3) and higher energy levels (n ≥ 4).The Brackett series corresponds to transitions between the fourth energy level (n = 4) and higher energy levels (n ≥ 5). The Pfund series corresponds to transitions between the fifth energy level (n = 5) and higher energy levels (n ≥ 6).