Elements Crossword Puzzle

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Across
  1. 3. Is a nonmetal and has 86 electrons
  2. 5. Has 29 electrons
  3. 9. Has 123 neutrons
  4. 10. Metalloid in period 5, group 16
  5. 12. Is an Actinide with 157 neutrons
  6. 13. Is in period 5, Group 6
  7. 15. Period 5, Group 4
Down
  1. 1. It is a noble gas and is in period 4
  2. 2. Lanthanide with 67 protons
  3. 4. Metalloid and also a halogen
  4. 6. Atomic Mass is 39.098
  5. 7. Atomic Number is 2
  6. 8. Has 100 protons
  7. 11. Strong metal with 22 protons
  8. 14. Contains 176 Neutrons