Arundhati’s Periodic crossword table

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Across
  1. 2. a small group of elements with properties that are a mix of metals and nonmetals
  2. 5. Molecules formed by anions and cations
  3. 6. Element with a mass number of 6.941 u
  4. 8. a negatively charged ion
  5. 10. subdivision of electron shells separated by electron orbitals
  6. 12. element in group 2, period 4
  7. 13. the use of individual atoms to create structures
  8. 16. elements on the right-hand side of the periodic table
  9. 17. electrons that can move between atoms easily
  10. 19. elements listed horizontally
  11. 20. representation of atoms in a series of shells around the atomic nucleus
  12. 23. The outermost shell in an atom
  13. 24. creator of the periodic table framework in 1869
  14. 26. a positively charged ion
  15. 27. group of elements found in group 17
  16. 29. where elements can be found
  17. 30. sum of protons and neutrons of an atom
  18. 31. an atom found in group 2
Down
  1. 1. electrons arranged in each shell surrounding an atom
  2. 3. number of protons in an atom
  3. 4. elements listed vertically
  4. 7. an atom found in group 1
  5. 9. elements on the left-hand side of the periodic table
  6. 11. arrangement of carbon atoms
  7. 14. elements found in groups 3-12 of the periodic table
  8. 15. has an atomic number of 2
  9. 18. a substance made up of only one type of atom
  10. 21. arrangement of elements according to their atomic number
  11. 22. diagram representing the arrangement of electron shells in an atom
  12. 25. Gaseous elements found in group 18 of the periodic table
  13. 28. bonds formed by two or more shared atoms