Very Hard Periodic Table of Elements Crossword Puzzle Part 4

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Across
  1. 2. The element known as Mt on the periodic table of elements
  2. 5. The element known as Ni on the periodic table of elements
  3. 6. The element known as Po on the periodic table of elements
  4. 7. The element known as P on the periodic table of elements
  5. 8. The element known as N on the periodic table of elements
  6. 10. The element known as Ne on the periodic table of elements
  7. 13. The element known as Og on the periodic table of elements
  8. 14. The element known as Pb on the periodic table of elements
  9. 15. The element known as Nh on the periodic table of elements
  10. 16. The element known as Mo on the periodic table of elements
  11. 18. The element known as Np on the periodic table of elements
Down
  1. 1. The element known as Na on the periodic table of elements
  2. 3. The element known as No on the periodic table of elements
  3. 4. The element known as Mn on the periodic table of elements
  4. 7. The element known as Pa on the periodic table of elements
  5. 9. The element known as Nd on the periodic table of elements
  6. 10. The element known as Nb on the periodic table of elements
  7. 11. The element known as Pm on the periodic table of elements
  8. 12. The element known as O on the periodic table of elements
  9. 17. The element known as Os on the periodic table of elements