1. who is the father of atomic theory?
   
2. who discovered the electron?
   
3. who expressed particles by wave equations?
   
4. who researched on radioactivity?
   
5. who discovered the "open spaces" model?
   
6. who applied quantum theory to atoms?
   
   

-Rutherford, -Bohr, -Thomson, -Curie, -Dalton, -Schrödinger...