Question: Periodic Law

Answer: States that when the elements are arranged by increasing atomic number, there is a periodic repetition of their properties.

Question: Group

Answer: A vertical column of elements in the periodic table arranged in order of increasing atomic number; also called a family.

Question: Period

Answer: A horizontal row of elements in the modern periodic table.

Question: Representative Element

Answer: Elements from groups 1, 2, and 13-18 in the modern periodic table, possessing a wide range of chemical and physical properties.

Question: Transition Element

Answer: An element in groups 3-12 of the modern periodic table and are further divided into transition metals and inner transition metals