planetary model

• what is this?

  planetary model

  
• it was released in 1913
• the publisher is niels bohr
• the outer line is called energy shell
• the electrons are orbiting
• he said that electrons orbit the nucleus
• and the orbits have specific size and energy
• and the energy is related to its size
• the lowest energy is found in the smallest orbit
• he found that electrons can move around between each shell when gaining or losing energy