Across
- 1. A charged particle
- 3. Number of electrons in an s type subshell.
- 4. Versions of the same element with different number of neutrons
- 7. A negatively charged subatomic particle
- 8. chlorine is in this group of the periodic table
- 9. A positively charged ion
- 10. A theory of atomic structure where electrons orbit the nucleus in different energy levels
Down
- 2. This element has 7 protons
- 5. Sodium is in this group of the periodic table
- 6. A negatively charged ion
- 9. This element has 6 protons