List of metalloid lists - AbsoluteAstronomy.com

Lists of metalloids differ since there is no universally agreed or rigorous definition of the term metalloid

Metalloid

Metalloid is a term used in chemistry when classifying the chemical elements. On the basis of their general physical and chemical properties, each element can usually be classified as a metal or a nonmetal. However, some elements with intermediate or mixed properties can be harder to characterize...

(or its occasional alias, 'semi-metal').

The metalloid lists in this article have been sorted by year, author and edition. The frequency row gives the appearance count for each element, as a percentage. This figure needs to be manually checked, and updated if needs be, each time there is a new entry or a correction to the main body of the table.

A hashmark (#) next to an element means that its inclusion as a metalloid, in that particular reference, is qualified in some way by the author/s. When adding up the appearance count for each element, a hashmark entry has a value of one-half (½); a blank entry has a value of zero (0); and all other entries have a value of one (1).

Frequency (%)	1	4	86	9	9	95	5	2	95	99	24	3	87	98	1	1	6	48	40
Reference	H	Be	B	C	Al	Si	P	S	Ge	As	Se	Sn	Sb	Te	I	Pb	Bi	Po	At	Extras
Simmons 1947										As	Se		Sb	Te
Pauling 1949			B			Si			Ge	As			Sb	Te				Po
Szabó & Lakatos 1954		Be	B		Al	Si			Ge	As			Sb	Te				Po	At
Dull, Metcalfe & Williams 1958			B		Al	Si			Ge	As			Sb	Te				Po	At
Frey 1958			B			Si			Ge	As			Sb	Te				Po
Johnstone & Miller 1960			B	C		Si	P		Ge	As	Se		Sb	Te
Edwards et al. 1961			B			Si			Ge	As	Se		Sb	Te	I
Bond 1962			B			Si			Ge	As			Sb	Te				Po
Swift & Schaefer 1962			B			Si			Ge	As			Sb				Bi
Hoffman 1963		Be	B			Si			Ge	As			Sb	Te
Nathans 1963			B			Si			Ge	As			Sb	Te					At
Bailar, Moeller & Kleinberg 1965									Ge	As	Se			Te
Selwood 1965			B		Al	Si			Ge	As		Sn	Sb	Te			Bi	Po	At	Ga
Bassett et al. 1966		Be	B		Al	Si			Ge				Sb	Te				Po
Hultgren 1966				C		Si			Ge	As	Se		Sb	Te
Metcalfe, Williams & Castka 1966			B		Al#	Si			Ge	As			Sb	Te				Po
Rochow 1966			B	C#		Si	P#		Ge	As	Se#		Sb	Te			Bi#	Po#	At#
Mahan 1967			B			Si			Ge	As				Te
Paul, King & Farinholt 1967						Si			Ge	As	Se		Sb	Te
Siebring 1967			B		Al	Si			Ge	As			Sb	Te				Po
Cotton & Lynch 1968			B	C		Si			Ge	As	Se		Sb	Te					At
Dunstan 1968		Be			Al				Ge#	As		Sn	Sb	Te		Pb	Bi	Po
Tyrell & Warren 1968			B	C#	Al#	Si	P#		Ge#	As	Se#		Sb#	Te	I#			Po#	At
Williams, Embree & DeBey 1968			B		Al	Si			Ge	As			Sb	Te				Po
Chedd 1969			B			Si			Ge	As			Sb	Te				Po	At
Hägg 1969									Ge	As		Sn	Sb	Te					At
Holum 1969			B		Al	Si			Ge	As			Sb	Te				Po	At
Hunter 1969						Si				As	Se		Sb	Te
Moody 1969		Be	B		Al	Si			Ge	As			Sb	Te				Po	At
Dickerson, Gray & Haight 1970			B			Si			Ge	As			Sb	Te
Hardwick & Knobler 1970			B			Si			Ge	As			Sb	Te
Williams, Embree & DeBay 1970		Be	B		Al	Si			Ge	As			Sb	Te				Po
Dickson 1971						Si			Ge	As			Sb	Te				Po
Emsley 1971									Ge	As			Sb	Te
Nitz & Dhonau 1971			B			Si			Ge	As			Sb	Te				Po
Pimentel & Spratley 1971			B	C		Si			Ge	As	Se		Sb	Te				Po#	At#
Barrow 1972			B			Si			Ge	As				Te
Choppin & Johnsen 1972			B			Si			Ge	As	Se		Sb	Te
Horvath 1973			B			Si			Ge	As			Sb	Te				Po
Pascoe 1973			B	C		Si	P		Ge		Se			Te					At
Seager & Stoker 1973		Be	B		Al	Si			Ge	As			Sb	Te				Po	At
Allen & Keefer 1974			B			Si			Ge	As	Se		Sb	Te					At
Andrews 1974			B			Si				As				Te					At
Day & Johnson 1974						Si			Ge	As			Sb	Te				Po	At
Dickson 1974						Si			Ge	As			Sb	Te				Po	At
Duffy 1974									Ge	As	Se		Sb	Te
Fuller 1974			B	C		Si			Ge	As	Se			Te
Nordmann 1974			B			Si			Ge	As	Se			Te				Po	At
O'Connor 1974			B			Si			Ge	As			Sb	Te				Po
Rock & Gerhold 1974			B			Si			Ge	As			Sb	Te				Po	At
Pauling & Pauling 1975			B			Si			Ge	As			Sb	Te				Po
Hearst & Ifft 1976			B			Si			Ge	As	Se		Sb	Te
Tyler Miller 1976	H		B		Al	Si			Ge	As			Sb	Te				Po	At
Waser, Trueblood & Knobler 1976			B			Si			Ge	As			Sb	Te				Po
Bloomfield 1977			B		Al	Si			Ge	As			Sb	Te				Po	At
Ucko 1977			B		Al	Si			Ge	As			Sb	Te				Po	At
Hill & Holman 1978			B	C#		Si			Ge	As				Te
Coxon, Fergusson & Phillips 1980		Be#	B			Si			Ge	As			Sb#	Te					At
Warrena & Geballe 1981			B	C		Si	P	S		As	Se			Te					At
Walters 1982			B			Si			Ge	As				Te
Edwards & Sienko 1983									Ge	As			Sb	Te				Po	At#
Holtzclaw, Robinson & Nebergall 1984			B			Si			Ge	As			Sb	Te				Po	At
Boikess & Edelson 1985			B			Si			Ge	As				Te
Peters 1986			B			Si			Ge	As			Sb	Te				Po	At
Hibbert & James 1987						Si			Ge	As			Sb	Te			Bi	Po
Jones et al. 1987			B			Si			Ge	As			Sb	Te				Po	At
McQuarrie & Rock 1987			B			Si			Ge	As			Sb	Te				Po	At
Wulfsberg 1987			B			Si			Ge	As	Se		Sb	Te
Thayer 1988			B			Si	P		Ge	As				Te
Whitten, Gailey & Davis 1988			B		Al	Si			Ge	As			Sb	Te				Po	At
Bailar et al. 1989			B			Si			Ge	As	Se		Sb	Te
Gill 1989			B			Si			Ge	As			Sb	Te
Malone 1989			B			Si			Ge	As			Sb	Te				Po	At
Petrucci 1989						Si			Ge	As			Sb	Te				Po	At
Puddephatt & Monaghan 1989			B			Si			Ge	As			Sb	Te
Scott 1989			B			Si			Ge	As			Sb	Te
Segal 1989			B			Si			Ge	As			Sb	Te				Po
Oxtoby, Nachtrieb & Freeman 1990			B			Si			Ge	As			Sb	Te				Po	At
Atkins & Beran 1990						Si			Ge	As			Sb	Te				Po
Ebbing & Wrighton 1993			B			Si			Ge	As			Sb	Te					At
Zumdahl 1993			B			Si			Ge	As			Sb	Te				Po	At
Birk 1994			B			Si			Ge	As			Sb	Te				Po
Smith 1994			B			Si			Ge	As			Sb	Te
AAE 1996			B			Si			Ge	As	Se		Sb	Te
Brady & Holum 1996			B			Si			Ge	As			Sb	Te				Po	At
Harrison & de Mora 1996			B			Si			Ge	As				Te
Hook & Post 1996			B			Si			Ge	As			Sb	Te				Po	At
Atkins & Jones 1997						Si			Ge	As			Sb	Te				Po
Dayah 1997			B			Si			Ge	As			Sb	Te				Po
Mingos 1998			B			Si			Ge	As			Sb	Te				Po
Joesten & Wood 1999			B			Si			Ge	As			Sb	Te
Kremer 1999			B			Si			Ge	As			Sb	Te
Thompson 1999			B			Si			Ge	As			Sb	Te
Umland & Bellama 1999			B			Si			Ge	As	Se			Te					At
Callister 2000			B	C		Si			Ge	As	Se			Te
Enloe 2000			B			Si				As				Te					At
Mann, Meek & Allen 2000			B			Si			Ge	As			Sb	Te			Bi	Po
Phillips, Stozak & Wistrom 2000			B			Si			Ge	As			Sb	Te				Po	At
Ryan 2000			B			Si			Ge	As				Te
Hawkes 2001									Ge	As	Se		Sb	Te			Bi
Lewis & Evans 2001			B			Si			Ge	As			Sb	Te				Po
Masterton & Hurley 2001			B			Si			Ge	As			Sb	Te
Barrett 2002			B#			Si#			Ge#	As#	Se#		Sb#	Te#
Chang 2002			B			Si			Ge	As			Sb	Te				Po	At	116, 117
Harding, Johnson & Janes 2002						Si			Ge	As			Sb	Te
Johnson 2002						Si			Ge	As			Sb	Te					At
Rodgers 2002			B			Si			Ge	As			Sb	Te					At
Szefer 2002						Si			Ge	As	Se		Sb	Te
Woodgate 2002					Al				Ge	As			Sb	Te
Wright & Welbourn 2002			B			Si			Ge	As				Te
e-encyclopedia 2003			B			Si			Ge	As	Se		Sb	Te
Gupta 2003			B			Si			Ge	As			Sb	Te
Hunt 2003			B			Si			Ge	As			Sb	Te
Myers 2003			B			Si			Ge	As	Se		Sb	Te					At
Williams 2003			B			Si			Ge	As			Sb	Te				Po
Atkins 2004			B			Si			Ge	As			Sb	Te				Po
Cox 2004						Si			Ge	As	Se		Sb	Te
Gilbert, Kirss & Davies 2004			B			Si			Ge	As	Se		Sb	Te					At
Reilly 2004			B			Si			Ge	As	Se		Sb	Te				Po	At
Ebbing & Gammon 2005			B			Si			Ge	As			Sb	Te					At
Fry & Page 2005			B			Si			Ge	As			Sb	Te
Halliday, Resnick & Walker 2005			B			Si			Ge	As			Sb	Te				Po	At
Holler & Selegue 2005			B			Si			Ge	As			Sb	Te				Po	At#
Kotz, Treichel & Weaver 2005			B			Si			Ge	As			Sb	Te
Meyer 2005			B			Si			Ge	As			Sb	Te					At
Orchin 2005			B			Si			Ge	As			Sb	Te				Po	At
Swenson 2005			B	C		Si			Ge	As	Se		Sb	Te			Bi	Po	At
Baird 2006			B			Si			Ge	As			Sb	Te					At
Blei & Odian 2006						Si			Ge	As			Sb	Te				Po	At	116
Brown & Holme 2006			B			Si			Ge	As			Sb	Te					At
Dashek & Harrison 2006			B			Si			Ge	As			Sb	Te				Po	At
Finch et al. 2006			B			Si			Ge	As	Se		Sb	Te
Goldfrank & Flomenbaum 2006			B			Si			Ge	As			Sb	Te					At
Hatt 2006			B			Si			Ge	As	Se		Sb	Te
Hérold 2006			B	C		Si	P		Ge	As	Se						Bi	Po	At#
McMonagle 2006			B			Si			Ge	As				Te						114, 115, 116
Rayner-Canham & Overton 2006			B			Si			Ge	As				Te
Silberberg 2006			B			Si			Ge	As			Sb	Te
Slade 2006			B			Si			Ge	As			Sb	Te				Po
Wertheim, Oxlade & Stockley 2006			B			Si			Ge	As	Se		Sb	Te					At
Whitley 2006			B			Si			Ge	As			Sb	Te				Po
American Chemical Society 2007			B			Si			Ge	As			Sb	Te				Po
Astruc 2007			B			Si	P	S		As	Se
Casper 2007			B			Si			Ge	As			Sb	Te				Po
Crystal 2007			B			Si			Ge	As			Sb	Te				Po
DeGraff 2007			B			Si			Ge	As			Sb	Te				Po
Joesten, Hogg & Castellion 2007			B			Si			Ge	As			Sb	Te
Lewis 2007			B	C		Si	P	S	Ge	As	Se		Sb	Te				Po
Petty 2007			B	C		Si	P		Ge	As	Se	Sn	Sb	Te			Bi	Po	At
Rösler, Harders & Bäker 2007			B			Si			Ge	As		Sn#	Sb	Te
Saunders 2007			B			Si			Ge	As			Sb	Te				Po	At
Saunders 2007			B			Si			Ge	As			Sb	Te				Po	At
Shipman, Wilson & Tood 2007			B			Si			Ge	As			Sb	Te
Bauer, Birk & Sawyer 2008			B			Si			Ge	As			Sb	Te					At
Clugston & Flemming 2008						Si			Ge	As	Se		Sb	Te
Encyclopedia Columbia 2008										As	Se		Sb	Te
Ham 2008			B			Si			Ge	As			Sb	Te				Po
Kelter, Mosher & Scott 2008			B			Si			Ge	As			Sb	Te					At
Masterton & Hurley 2008			B			Si			Ge	As			Sb	Te
Merck 2008			B			Si			Ge	As			Sb	Te				Po
Nicolaou & Montagnon 2008			B	C		Si			Ge	As			Sb	Te				Po	At
Řezanka & Sigler 2008			B			Si				As	Se			Te					At
Tro & Neu 2008			B			Si			Ge	As			Sb	Te
Vallero 2008			B			Si			Ge	As			Sb	Te				Po
Brown et al. 2009			B			Si			Ge	As			Sb	Te
Burrows et al. 2009			B			Si			Ge	As	Se		Sb	Te
Castor-Perry 2009			B			Si			Ge	As			Sb	Te	I			Po	At
Cracolice & Peters 2009			B			Si			Ge	As			Sb	Te					At
Economou 2009			B		Al	Si			Ge	As			Sb	Te				Po	At
Habashi 2009			B			Si			Ge	As	Se		Sb	Te			Bi	Po
Hein & Arena 2009,			B			Si			Ge	As			Sb	Te				Po
Leach 2009			B			Si			Ge	As			Sb	Te				Po
Manning 2009			B			Si			Ge	As			Sb	Te				Po
McMurray & Fay 2009			B			Si			Ge	As			Sb	Te					At
Reger, Goode & Ball 2009			B			Si			Ge	As			Sb	Te
Schnepp 2009			B			Si			Ge	As			Sb	Te				Po	At
Shubert & Leyba 2009			B			Si			Ge	As			Sb	Te
Whitten et al. 2009			B			Si			Ge	As			Sb	Te					At
Aldinger & Weberruss 2010			B			Si			Ge	As			Sb	Te
Banks et al. 2010			B			Si			Ge	As			Sb	Te
Bentor 2010			B			Si			Ge	As			Sb	Te				Po
Fayer 2010			B			Si			Ge	As			Sb	Te				Po	At
Gray 2010			B			Si			Ge	As			Sb	Te					At
Groysman 2010						Si			Ge	As			Sb	Te				Po
Halka & Nordstrom 2010			B			Si			Ge	As			Sb	Te				Po
Lombi E & Holm PE 2010			B			Si			Ge	As			Sb	Te				Po	At
NEST Association 2010			B			Si			Ge	As			Sb	Te					At
RCCS 2010			B	C		Si	P		Ge	As	Se	Sn	Sb	Te			Bi	Po	At
Senese 2010			B#	C		Si			Ge	As	Se#		Sb	Te				Po	At
Barbalace 2011			B			Si			Ge	As			Sb	Te				Po
Encyclopædia Britannica Online 2011			B			Si			Ge	As			Sb	Te				Po#	At#
Helmenstine 2011			B			Si			Ge	As			Sb	Te				Po#
Moore 2011			B			Si			Ge	As			Sb	Te					At
QA International 2011			B			Si			Ge	As	Se		Sb	Te

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