The given set of elements has to be classified as metal, non-metal, or metalloid.
Substance that is a good conductor of electricity and heat, which has a shine or luster, is known as metal. Usually metals are solids at room temperature except for mercury. Metals are ductile and malleable.
Non-metals are elements that do not possess the metallic characteristics. Non-metals are not shiny. They do not conduct electricity and heat except grapheme.
Metalloids are the one which has both metallic and non-metallic properties. They are semimetals. Elements like Silicon and Germanium conduct electricity when temperature is increased. But at room temperature they are poor conductor of electricity.
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