Across
- 3. element that typically has four or more valence electrons and that does not exhibit the general properties of metals; located on the right side of the periodic table.
- 5. transition metal An element from either of two rows usually placed below the periodic table; a member of either the lanthanide or actinide series. It typically has two valence electrons.
- 8. An element with characteristics between those of metals and nonmetals, also called semiconductors, located between metals and nonmetals on the periodic table.
- 15. Metal An element in Group 1 of the periodic table, having one valence electron that it can easily lose to form a 1+ cation, making it extremely reactive; the most reactive of all the metals.
- 16. Table: A table of the chemical elements arranged to display their periodic properties in relation to their atomic numbers.
- 17. Metal Any elements in Groups 3-12 of the periodic table, typically having one or two valence electrons, which it easily loses, resulting in cations with charges of 1+ or 2+.
- 18. A row in the periodic table of the elements; also called a series.
Down
- 1. A measure of an element's ability to attraAtomic Radius: The distance from the center of an atom's nucleus to its outermost energy level.the center of an atom's nucleus to its outermost energy level.
- 2. gas: An element in group 18 on the periodic table having eight valences that fill the outer energy level with a full outer energy level.
- 4. Group Any of Groups 13-16 in the periodic table; so named because they contain metals, nonmetals, and metalloids. These groups are often named for the first element of the family.
- 6. See family.
- 7. Electron Any electron in the outermost energy level of a neutral atom. Unpaired valence electrons are usually involved in chemical bonding.
- 9. dot notation A representation of an atom consisting of its chemical symbol with surrounding dots representing its valence electron.
- 10. Law: The law that states that the properties of the elements vary with their atomic numbers in a regular, repeated pattern.
- 11. metal An element in Group 2 of the periodic table, having two valence electrons that tend to lose easily to become a 2+ cation, making it very reactive.
- 12. A column of elements in the periodic table having similar valence electron arrangement, resulting in similar chemical properties; also known as a group.
- 13. An element that is typically dense, solid, ductile, malleable, highly conductive, and chemically reactive, especially in the presence of nonmetal elements.
- 14. An element in Group 17 of the periodic table with seven valence electrons. It easily gains an electron, forming a 1-anion, which causes it to be highly reactive.