Across
- 1. has 73 atomic number
- 3. Rubidium is in what element group?
- 6. Fe stands for what element?
- 8. Has 63.546 atomic weight
- 9. Who is the creator of periodic table?
Down
- 2. 14 atomic mass
- 3. Helium has two
- 4. How many element group are there?
- 5. Au stands for what element?
- 7. Most abundant element in the universe