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| Description: This schematic diagram of hydrogen’s four lowest allowed orbits shows what happens when a hydrogen atom absorbs or emits an Hα photon, which is red and has a wavelength of 656.28 nm. The spectral lines by such events are also shown. (a) A photon is absorbed by the electron, causing the electron to transition from orbit n = 2 up to orbit n = 3. (b) A photon is emitted as the electron makes a transition from orbit n = 3 down to orbit n = 2. Picture Stats: Views: 810 Filesize: 234.85kB Height: 900 Width: 1312 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=15931 |