Periodic Table

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123456789101112131415161718
Across
  1. 4. Vertical column of elements that all have similar properties
  2. 6. Group that has properties of a metal and nonmetal
  3. 7. First element in the periodic table
  4. 11. Group of elements in the middle of the periodic table; do not belong in a group
  5. 13. Number of protons and neutrons
  6. 16. Number of protons in an element
  7. 17. Symbol:Li
  8. 18. Distance from nucleus to outermost shell of an electron
Down
  1. 1. Second group in the periodic table
  2. 2. Horizontal rows of elements that all have the same number of electron shells
  3. 3. Element with the smallest atomic radius
  4. 5. Elements with a full shell of electrons
  5. 8. Symbol:B
  6. 9. A pure substance that makes up everything in the world
  7. 10. First group in the periodic table
  8. 12. Element with the largest atomic radius
  9. 13. Smallest particle that cannot be cut
  10. 14. Symbol:O
  11. 15. Trends across the periodic table