Huh what type of question is that?!
Answer: although it is convenient to think of the electron moving around the nucleus along circular paths
Explanation:
Something that is special to you or event that means alot to you
1. 
- The changing of liquid to a gas.
2. 
- The major source of pollution.
3. 
- Carbon dioxide and water vapor trapping heat given off by Earth.
4. 
- Layer absorbing ultraviolet rays.
5. 
- The changing of a gas to a liquid.
6. 
- Layer responsible for reflecting radio waves.
7. 
- The layer in which weather changes.
