PERIODIC TABLE
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Alkali Metals
Alkaline Earth Metals
Transition Metals
Nonmetals
Metalloids
Halogens
Noble Gases
Ionic Bonding
Nonmetals
A nonmetal is an element that lacks most of the properties of a metal. Most nonmetals are reactive, and gain or share electrons when reacting. Nonmetals are poor conductors, dull, and brittle. Nonmetals have four to eight valence electrons.
Nonmetals