Across
- 4. 1 to 2 letter for name.
- 5. what element has the atomic number of 8
- 6. in order
- 7. average mass of elements and isotopes.
- 8. number of protons in a elements atom
- 9. Who made the first periodic table?
Down
- 1. Process of representing.
- 2. discovered 63 elements
- 3. how did Mendeleev order the periodic table
- 6. Shows elements in order