Across
- 2. part of the atom that is neutrol
- 5. part of the atom that is negative
- 6. a table full of elements
- 9. electron and neurton together
- 10. opposite to period in the periodic table
- 11. what do you call something with the same amount of but different number of neutrons
Down
- 1. things you find in the periodic table
- 3. find in the middle of the electonic shell
- 4. opposite to groups in the periodic table
- 5. runs around the edge of the nucleus
- 7. number the number of protons which equals the number of electrons
- 8. number the number of prontos and neutrons in the nucleus
- 12. part of the atom that is positvely chraged