Periodic Table
Across
- 2. the state or power of being reactive or the degree to which a thing is reactive.
- 5. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
- 6. group 1 of the periodic table.
- 9. a negatively charged ion.
- 10. group 18 of the periodic table.
- 12. group 2 of the periodic table.
- 15. distance from the nucleus to the boundary of the surrounding cloud of electrons.
- 16. an element or substance that is not a metal.
- 17. a positively charged ion.
- 18. a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity.
Down
- 1. the principle that chemical properties of the elements are periodic functions of their atomic numbers.
- 3. the set of chemical properties that are associated with the elements classified as metals in the periodic table.
- 4. an element whose properties are intermediate between those of metals and solid nonmetals.
- 7. the amount of energy released when an electron is added to a neutral atom or molecule to form a negative ion.
- 8. the amount of energy required to remove an electron from the atom.
- 11. the tendency of an atom to attract electrons in the formation of an ionic bond.
- 13. groups 4-12 of the periodic table.
- 14. group 17 of the periodic table.