Across
- 2. discovered electron.
- 5. Austrian physicist who founded the study of wave mechanics when he developed a mathematical equation that describes the wavelike behavior of subatomic particles.
- 9. English chemist and physicist, who formulated the modern form of the atomic theory.
Down
- 1. neutral charged particle
- 2. British physicist who in 1932 discovered the neutron.
- 3. famous for discoveryof charge of electron.
- 4. First man to contribute to atomic theory.
- 6. He showed that the wavelengths of X-rays emitted from the elements are related to their atomic numbers.
- 7. positively charged particle
- 8. negatively charged particle