Используйте «electron orbit» в предложении

1. electron orbits behave as if they were solid objects

2. and to ―quantise‖ electron orbits – the ―quantum

3. condition of allowed and forbidden electron orbits

4. with its allowed and forbidden electron orbits,

5. The radius of the electron orbit is said to be about the order of 10,000 times as wide as the nucleus of an atom

6. The speed of an electron orbiting around an atom is also constant