A family is a column in a Periodic Table; all elements in a family have similar physical and chemical properties, because they have the same numbers of valence electrons (outer electrons).
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a family of the periodic table is like a group of elements of the same type.
noble gases
In chemistry, a group (also known as a family) is a vertical column in the periodic table of the chemical elements. There are 18 groups in the standard periodic table.
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Alkali Metals Alkaline Earth Metals Transition Elements Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family The noble Gases