Patterns of the Periodic Table

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Across
  1. 4. Elements whose atomic numbers range from 57 to 71
  2. 5. How easily a substance reacts chemically with other substances.
  3. 6. A row of chemical elements
  4. 10. The number of protons in the nucleus of an atom
  5. 12. A positively charged ion
  6. 15. Elements are arranged in an order, which their properties would repeat after some period
  7. 16. Elements that are usually poor conductors
  8. 18. An atom or molecule that has a different number of electrons than protons
  9. 19. Another word for family
  10. 20. Reacts with water on the periodic table
  11. 23. Elements found in groups 3-12
  12. 25. Elements who sit between the transition metals on their left, and the metalloids on their right
Down
  1. 1. A series of metallic elements whose atomic numbers start from 89 and end at 103
  2. 2. Reactive but less than alkali metals
  3. 3. Electrons that are in the outermost energy level
  4. 7. The distribution of electrons of an atom or molecule in atomic or molecular orbitals
  5. 8. Toxic, non-metallic element group
  6. 9. A column of elements in the periodic table of the chemical elements
  7. 11. The process by which ions are formed by gain or loss of an electron from an atom or molecule
  8. 13. A negatively charged ion
  9. 14. Elements whose properties are between metals and nonmetals
  10. 17. Historically, the inert gasses
  11. 21. To the left of the metalloids
  12. 22. The mass of an atom
  13. 24. Atomic mass rounded