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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.
Some of the nonmetals are gasses at room temperature, some are solids, one (bromine) is a liquid. Unlike metals, some of the nonmetals exist as distinct molecules. Nonmetals generally form negative ions. Metalloids have properties of both metals and nonmetals and do not fit neatly into either category.They are often lustrous like metals but tend to be brittle like nonmetals. metalloids are classified as semiconductors as they have a moderate ability to conduct heat and electricity. They are solid at room temperature..onmetals generally form negative ions. Metalloids have properties of both metals and nonmetals and do not fit neatly into either category. They are often lustrous like metals but tend to be brittle like nonmetals.