Across
- 2. mistaken for pencil
- 4. horizontal rows
- 7. 2nd most abundant and 14 neutrons
- 10. first element in 4th period
- 12. nitrogen family with 16 neutrons
- 13. member of boron family most abundant
- 14. noble gas with 2 electrons
- 15. member of the halogen family with atomic number of 53
- 16. 26 protons
- 19. transition metal with 25 electrons
- 21. gas with mass number of 19
- 25. found in teeth
- 26. only element the in the halogen family that is a liquid
- 29. have 2 electrons in first shell
- 30. gas with 8 protons
- 31. metal with 28 electrons
- 35. transition metal with 30 e
- 36. make up 79% of air
- 38. nonmetyals tend to form ions with a charge
- 39. most elements
Down
- 1. most active nonmetals
- 3. metals tend to form ions
- 5. type of gas considered inactive
- 6. in carbon family in 5th period
- 8. elements are arranged by atomic
- 9. atomic mass 35.453
- 11. member of the alkaline earth metals used to make fireworks
- 17. atomic number is 47
- 18. metal that's liquid
- 20. vertical columns or families
- 22. name for group 1
- 23. not really a alkali metal
- 24. metals in the middle of the periodic tbale
- 27. number of protons and neutrons
- 28. name for group II
- 32. head of the carbon family
- 33. atomic number is the number of
- 34. silvery white metal used to make salt
- 37. atomic number is 79