Template:Periodic table (metalloid): Difference between revisions

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Elements recognized as metalloids
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t
e
	13	14	15	16	17
2	B Boron	C Carbon	N Nitrogen	O Oxygen	F Fluorine
3	Al Aluminium	Si Silicon	P Phosphorus	S Sulfur	Cl Chlorine
4	Ga Gallium	Ge Germanium	As Arsenic	Se Selenium	Br Bromine
5	In Indium	Sn Tin	Sb Antimony	Te Tellurium	I Iodine
6	Tl Thallium	Pb Lead	Bi Bismuth	Po Polonium	At Astatine

Commonly recognized (86–99%): B, Si, Ge, As, Sb, Te Irregularly recognized (40–49%): Po, At Less commonly recognized (24%): Se Rarely recognized (8–10%): C, Al, P, Bi (All other elements cited in less than 6% of sources) Arbitrary metal-nonmetal dividing line: between Be and B, Al and Si, Ge and As, Sb and Te, Po and At
Recognition status, as metalloids, of some elements in the p-block of the periodic table. Percentages are median appearance frequencies in the lists of metalloids.^{[n 1]} The staircase-shaped line is a typical example of the arbitrary metal–nonmetal dividing line found on some periodic tables.

^ For a related commentary see also: Vernon RE 2013, 'Which Elements Are Metalloids?', Journal of Chemical Education, vol. 90, no. 12, pp. 1703–1707, doi:10.1021/ed3008457

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 | style="background:white; border-bottom:1px solid black; border-left:1px solid black; border-top:1px solid black; border-right:1px solid black;"| <big>Tl</big><br>Thallium
 | style="background:white; border-bottom:1px solid black; border-top:1px solid black; border-right:1px solid black;"| <big>Pb</big><br>Lead
-| style="background:{{element color|metalloid citeclass 4 of 4}}; border-top:1px solid black; border-right:1px solid black;"| <big>Bi</big><br>Bismuth
+| style="background:{{element color|metalloid citeclass 4 of 4}}; border-bottom:1px solid black; border-top:1px solid black; border-right:1px solid black; border-right:2px solid grey; border-top:2px solid grey;"| <big>Bi</big><br>Bismuth
 | style="background:{{element color|metalloid citeclass 2 of 4}}; border-bottom:1px solid black; border-top:1px solid black; border-right:1px solid black; border-right:2px solid grey; border-top:2px solid grey;"| <big>Po</big><br>[[Polonium]]
 | style="background:{{element color|metalloid citeclass 2 of 4}}; border-bottom:1px solid black; border-top:1px solid black; border-right:1px solid black; border-left:2px solid grey;"| <big>At</big><br>[[Astatine]]