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Metal elements are usually good conductors of both electricity and heat. The dividing line between metals and non-metals is not hard and fast, thus the distinction between Post-transition metals and Metalloids is represented differently on different versions of the Periodic Table.etal elements are usually good conductors of both electricity and heat. The dividing line between metals and non-metals is not hard and fast, thus the distinction between Post-transition metals and Metalloids is represented differently on different versions of the Periodic Table.
Metalloids are those chemical elements that exhibit properties of both metals and non-metals. Since elements with similar properties are placed together in the periodic table, all metalloids are placed together between the metals and non-metals.Metalloid is a term that is derived from the Latin word, metallum which means 'metal', and the Greek word oeides which means 'sort of'.etalloids in the periodic table include Boron (B), Silicon (Si), Germanium (Ge), Arsenic (Ar), Antimony (Sb), and Tellurium (Te). Here are the general physical properties exhibited by metalloids. Refer to the images inside the boxes, for the electronic configuration of each.