- An atom of hydrogen has only one electron so it gives the simplest emission spectrum.
- The atomic spectrum of hydrogen consists of seperate series of lines mainly in the ultraviolet, visible and infared regions of electromagnetic spectrum.
- Only the Balmer series is in the visible region
- When an atom is excited by absorbing energy, an electron jumps to a higher energy level. As the electron falls back down to a lower energy level, it emits energy in the form of electromagnetic radiation.
- The emitted energy can be seen as a line in the spectrum because the energy of the emitted radiation is equal to the difference between the two energy levels in this electronic transition
IE. It is a fixed quantity / quantum
- Electronic transition is when an electron moves from one energy level to another
- Delta E = hf, electronic transmitions…