Across
- 1. Charge of a neutron
- 4. Strongest acid
- 5. Number of electrons in oxygen
- 8. Metallic element in teeth
- 9. Subatomic particle in orbitals
Down
- 2. Process of water to vapor
- 3. SI unit for energy
- 6. From the noble gas family
- 7. Type of hydrocarbon in methane
- 8. Ionic compound's structure