Chemistry

3. gas An extremely nonreactive group 8A element.
4. A highly reactive group 7A element.
5. Rows in the Periodic table.
6. Elements Groups of elements in the modern periodic table that are designated with an A and posses a wide range of chemical and physical properties.
8. The boxes are arranged in order of increasing atomic number into a series of columns.
9. Elements that are generally gases or dull, brittle solids that are poor conductors of heat and electricity.
11. An element that is solid at room temperature, a good conductor of heat and electricity, and is generally shiny; most metals are ductile and malleable.

1. An element, such as Silicon or germanium, that has physical and chemical properties of both metals and nonmetals.
2. transition metal A type of of group N element that is contained in the f-block of the periodic table and is characterized by a filled outermost s orbital,, and filled or partially filled 4f and 5f orbitals.
5. law The statement that there is a periodic repetition of chemical and physical properties of the elements when they are arranged by increasing atomic number.
7. metal A group of B element that is contained in the d-block of the periodic table and, with some exeptions, is characterized by a filled outermost s orbital of energy level n, and filled or partially filled d orbitals of energy level n-1
10. Earth Metal Group 2A elements in the modern periodic table.