Metalloid

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Together with the metals and nonmetals, the metalloids (in Greek metallon = metal and eidos = sort) form one of the three categories of chemical elements as classified by ionization and bonding properties. They have chemical properties intermediate between those of metals and nonmetals. For example, their oxides are often amphoteric. Their electronic properties vary from those of semiconductors (B,Si,Ge) to semimetals (eg. Sb). The concepts metalloid, semiconductor and semimetal should not be confused. Metalloid refers to the chemical properties of certain elements in relation to the periodic table. Semiconductor and semimetal refer to the physical properties of materials (including alloys, compounds) and there is only partial overlap between the two.

The known metalloids (and their atomic symbols) are:<ref name="acs">ACS Periodic Table. [1]</ref>

In the periodic table, metalloids occur along the diagonal line from boron to astatine. Elements to the upper right of this line are nonmetals; elements to the lower left are metals. This line, which separates the metals from the nonmetals is commonly known as the "stair-step" or "staircase."

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

[edit] Reference

<references/>



Periodic tables

Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks | Alternatives

Lists of elements

Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass

Groups:   1 -  2 -  3 -  4 -  5 -  6 -  7 -  8 -  9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods:  1  -  2  -  3  -  4  -  5  -  6  -  7  -  8  -  9
Series:   Alkalis  -  Alkaline earths  -  Lanthanides  -  Actinides  -  Transition metals  -  Poor metals  -  Metalloids  -  Nonmetals  -  Halogens  -  Noble gases
Blocks:  s-block  -  p-block  -  d-block  -  f-block  -  g-block

ca:Plantilla:Elements químics
ar:شبه فلز ast:Metaloide bs:Polumetali ca:Metal·loide cs:Polokov de:Halbmetall et:Poolmetallid el:Μεταλλοειδή es:Metaloide eo:Metaloido fr:Métalloïde ko:준금속 hr:Polumetali id:Metaloid is:Málmungur it:Semimetalli he:מתכות למחצה lt:Pusmetaliai lmo:Mèzz-metàj nl:Metalloïde ja:半金属 nn:Halvmetall nds:Halfmetall pl:Półmetale pt:Metalóide ro:Metaloid ru:Полуметаллы simple:Metalloid sl:Polkovina sr:Металоиди sh:Metaloid fi:Puolimetalli sv:Halvmetall th:ธาตุกึ่งโลหะ

Metalloid

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