Periodic Table crossword

123456789101112131415161718
Across
  1. 1. name or term of a row going down
  2. 4. any element of the lanthanide series
  3. 6. tells the number of protons in a nucleus/ two words
  4. 8. purple group/ group 18/ two words
  5. 9. an element that has both metallic & non-metal properties
  6. 10. group number 1/ two words
  7. 11. two words/ opposite of metals
  8. 14. group number 2/ three words
  9. 17. green group/ two words
  10. 18. group 16/ two words/ 6 valence electrons
Down
  1. 2. of, pertaining to, exhibiting, or caused by radioactivity
  2. 3. brown group/ group 17
  3. 5. group 3-12/ two words
  4. 7. name or term of a row going across
  5. 12. group 14/ yellow group
  6. 13. a substance produced by or used in a chemical process.
  7. 15. group 15/ two words
  8. 16. any element of the actinide series