Across
- 4. as rocket propulsion
- 6. is larger than its atom
- 12. can be found in common salt
- 13. effect is one of factors affecting IE.
- 14. can be found in each household
- 15. is smaller than its neutral atoms
- 16. is tendency of an atom to attract electrons
- 17. can make our bones and teeth stronger
Down
- 1. form sweet salt
- 2. radius half of the distance taken between two adjacent atoms
- 3. IE is .... When moving across a period
- 5. can be found in battery
- 7. used in explosive and laughing gas
- 8. is used in fertilizer industry
- 9. is a grouo of atoms or ions having same electronic configuration
- 10. ionisation energy is minimum energy needed to remove an electron from atoms or ions.
- 11. is use to prevent cavities