Chemistry

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Across
  1. 3. All of these elements have 3 shells
  2. 5. Gaining electrons
  3. 6. Where most of the mass of an atom is found
  4. 7. Most electronegative atom
  5. 9. Losing electrons
  6. 10. Charge of an atom
  7. 11. Who made the periodic table of elements
  8. 12. Most unstable alkali metal
Down
  1. 1. A brown liquid that will displace Iodine
  2. 2. The all have variable oxidation states
  3. 4. Colour of chlorine gas
  4. 8. Group 6, period 4