Elements crossword

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Across
  1. 1. recovered from the ocean floor Cape of Good Hope symbol C
  2. 4. its atomic number is 10 it is a noble gas in group 18
  3. 5. discovered in 1898 chemical symbol is Kr
  4. 6. verticle on the periodic table
  5. 8. atomic number 4 and in group 2
  6. 9. table table of the chemical elements
  7. 11. its chemical symbol is O
  8. 12. group 17 atomic weight of 18.9984032
  9. 13. horizontal on the periodic table
Down
  1. 2. chemical symbol that is Br
  2. 3. the element under hydrogen
  3. 7. the very first element on the periodic table
  4. 10. has the second smallest atomic number