Across
- 4. positively charged in nucleus
- 6. resist water
- 8. cation electrons attracted to anions
- 9. positively charged ion that attracts negative
- 10. same number of protons but different number of neutrons
- 12. unequal share of bonds
- 13. always excist between two identical atoms
Down
- 1. number of protons in the nucleus of an atom
- 2. atoms with an unpaired electron in its outermost chell
- 3. Number total of protons and neutrons
- 5. neutral charge in nucleus
- 7. polar covalent bonds that leave a positive charge
- 11. negativity charged that move around the nucleus in energy levels