Across
- 3. what was Bohr's model called
- 4. Who discovered the neutron?
- 6. boron and Antimony are examples of?
- 7. Thompson's model called?
- 8. barium and magnesium are what type of metal?
- 10. what contains electrons that are massless, and are negatively charged?
- 12. what ion has a positive charge?
- 13. what ion gains electrons?
- 16. what charge does Electrons have?
- 17. What is 80% of the periodic table made of?
- 18. the way electrons are arranged in various orbitals.
- 19. What is easy to break and are poor conductors?
Down
- 1. what radioactive decay emits a new electron?
- 2. Dalton's model is called?
- 3. what are the horizontal rows called on the periodic table?
- 5. what are the vertical columns on the periodic table?
- 9. AMU stands for?
- 11. who discovered the proton?
- 14. what is the name of group 18 or 8A called?
- 15. what is the wave's height from zero to crest called?