Statements (31)
Predicate | Object |
---|---|
gptkbp:instanceOf |
gptkb:chemical_compound
|
gptkbp:abundanceInEarthsCrust |
10 ppm
|
gptkbp:appearance |
black-brown
|
gptkbp:atomicNumber |
5
|
gptkbp:block |
p-block
|
gptkbp:boilingPoint |
4200 K
|
gptkbp:CASNumber |
7440-42-8
|
gptkbp:category |
metalloid
|
gptkbp:density |
2.08 g/cm³
|
gptkbp:discoveredBy |
gptkb:Joseph_Louis_Gay-Lussac
gptkb:Louis_Jacques_Thénard |
gptkbp:discoveredIn |
1808
|
gptkbp:electronegativity |
2.04
|
gptkbp:foundIn |
Earth's crust
|
https://www.w3.org/2000/01/rdf-schema#label |
Element B
|
gptkbp:isotopes |
10B
11B |
gptkbp:meltingPoint |
2349 K
|
gptkbp:name |
gptkb:Boron
|
gptkbp:namedAfter |
borax
|
gptkbp:oxidationStates |
+3
|
gptkbp:period |
2
|
gptkbp:relatedGroup |
13
|
gptkbp:standardState |
gptkb:stone
|
gptkbp:symbol |
B
|
gptkbp:uses |
gptkb:glass
semiconductors detergents neutron absorber in nuclear reactors |
gptkbp:bfsParent |
gptkb:FIRO-B
|
gptkbp:bfsLayer |
7
|