List of Metalloids or Semimetals 3


The metalloids or semimetals are a group of elements that contain properties of both metals and nonmetals. The highlighted elements are the metalloids.

The metalloids or semimetals are a group of elements that contain properties of both metals and nonmetals. The highlighted elements are the metalloids.

Metalloids, also known as semimetals are elements containing properties similar and midway between metals and nonmetals. They are found to divide the periodic table between the metals on the left and the nonmetals on the right.

Metalloids often have the following properties:

  • could be dull or shiny
  • conducts heat and electricity, but not as well as metals
  • good semiconductors
  • usually malleable
  • usually ductile
  • can both gain and lose electrons in reactions

This is a list of the seven metalloid elements in order of increasing atomic number.

 NUMBER SYMBOLELEMENT
5BBoron
14SiSilicon
32GeGermanium
33AsArsenic
51SbAntimony
52TeTellurium
84PoPolonium

About Todd Helmenstine

Todd Helmenstine is the physicist/mathematician who creates most of the images and PDF files found on sciencenotes.org. Nearly all of the graphics are created in Adobe Illustrator, Fireworks and Photoshop. Todd also writes many of the example problems and general news articles found on the site.


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