Periodic Table

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1234567891011121314151617
Across
  1. 2. Number of rows in the modern periodic table
  2. 3. Element with electronic configuration 2, 8, 3
  3. 7. Horizontal row in the modern periodic table
  4. 9. Variants of an element with different atomic masses
  5. 10. Column in the modern periodic table
  6. 11. Element with twice as many electrons in its second shell as its first shell
  7. 12. Discovered the periodic law of elements
  8. 14. Element with two completely filled electron shells
  9. 16. Elements in group 17
Down
  1. 1. Inventor of the modern periodic table
  2. 4. Element in group 2 and period 3
  3. 5. Germanium is classified as this
  4. 6. German scientist who invented the triads
  5. 8. Positively charged ion
  6. 9. Chemical nature of elements in group 18
  7. 13. Number of electrons that third shell can hold
  8. 15. Number of elements in the third period of the periodic table
  9. 17. Side of the periodic table with highest metallic character