Periodic Table Crossword Puzzle!

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Across
  1. 3. Group 1, Period 7
  2. 9. 7 Valence Electrons
  3. 10. Group 11, Period 6
  4. 14. 2 Valence Electrons
  5. 15. Group 18, Period 2
  6. 17. Have high melting points
  7. 18. Number of Protons in Elements
  8. 20. Have properties of metals and non metals
Down
  1. 1. Group-1A
  2. 2. Ability to be stretched
  3. 4. Number of Protons and Neutrons
  4. 5. Father of Periodic Table
  5. 6. Number of Groups
  6. 7. Ability to be bent
  7. 8. Full Valence Shells
  8. 11. Poor Conductors
  9. 12. Number of Periods
  10. 13. Vertical Columns on Periodic Table
  11. 16. Horizontal Rows on Periodic Table
  12. 19. Good Conductors