Across
- 2. measure of the ability of an atom in a chemical compound
- 6. the energy required to remove an electron from an atom
- 7. an element that had properties of both metals and nonmetals
- 9. an electron that is found in the outer most shell of an atom
- 10. an atom, radical, or molecule that has gained or lost one or more electrons
Down
- 1. arrangement of electrons in an atom
- 3. the attractive force that holds atoms or ions together
- 4. a chemical rule of thumb
- 5. number of protons in the nucleus of an atom
- 8. the sum of the numbers of protons and neutrons that make up the nucleus of the atom