Across
- 3. makes 65% of our body
- 4. gas/ also known as inert gases,family
- 7. have different numbers of neutrons
- 8. number/ # of protons + # of neutrons
- 9. at least 110 of these are known
- 10. found between the 2 types of metals
- 13. located in group 17 and it is a family
- 15. make very good conductors
- 16. structure/ only included outer most orbital
- 17. the number of valence electrons
- 18. mass/ number of neutrons
Down
- 1. only element with 0 neutrons
- 2. rows that run east to west
- 5. electrons/number of the group
- 6. have a very dull look
- 11. the 1 or 2 letters that represent the element
- 12. metals/ all have 1 valence electron,family
- 14. earth metals/ located in group 2,family