PERIODIC TABLE

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123456789101112131415161718
Across
  1. 1. → Middle elements
  2. 4. → Poor conductors
  3. 7. → Vertical columns
  4. 9. → Similar in same group
  5. 10. → Gain electrons
  6. 13. TABLE → Arrangement of elements
  7. 16. → Created first periodic table
  8. 17. → Number of periods
  9. 18. → Centre of atom
Down
  1. 1. → Good conductors
  2. 2. → Increasing atomic number
  3. 3. → Lose electrons
  4. 5. → Horizontal rows
  5. 6. GASES → Group 18 elements
  6. 8. → Smallest particle
  7. 11. METALS → Group 1
  8. 12. → Number of groups
  9. 14. NUMBER → Number of protons
  10. 15. → Group 17