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31. Antimony is like a nonmetal in that it is a brittle, crystalline solid, has poor electrical and heat conductivity, and has a low boiling point. However, it is also like a metal because of its shiny silver appearance and ability to form alloys. Into which group should antimony be placed? 32.
Between the metals and nonmetals is a group of elements known as either the semimetals or the metalloids. Here is a look at the location of these elements and their common properties. Location on the Periodic Table.The metalloids or semimetals are located along the line between the metals and nonmetals in the periodic table. The metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium.Polonium is often considered a metalloid, too.Properties of the Semimetals or Metalloids.The electronegativities and ionization energies of the metalloids are between those of the metals and nonmetals, so the metalloids exhibit characteristics of both classes.olonium is often considered a metalloid, too. Properties of the Semimetals or Metalloids. The electronegativities and ionization energies of the metalloids are between those of the metals and nonmetals, so the metalloids exhibit characteristics of both classes.