PERIODIC TABLE

1234567891011
Across
  1. 2. Rubidium is in what element group?
  2. 4. Helium has two
  3. 6. Au stands for what element?
  4. 8. How many element group are there?
  5. 9. Most abundant element in the universe
  6. 10. Who is the creator of periodic table?
Down
  1. 1. Discovered the number of proton in the nucleus of each atom
  2. 3. has 73 atomic number
  3. 5. Has 63.546 atomic weight
  4. 7. 14 atomic mass
  5. 11. Fe stands for what element?