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Metalloids, also known as semimetals are elements containing properties midway between metals and nonmetals. This is a list of the metalloid elements.
1 are poor conductors of heat and electricity. 2  don't like to lose electrons. 3  Most nonmetals are gases at room temperature; however, a few are solids and only one (bromine) is a liquid. 4  The noble gases are an unreactive group of nonmetals that like to exist as independent atoms, or be monatomic.