Statements (33)
| 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:crystalSystem |
rhombohedral
|
| gptkbp:density |
2.34 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 5
|
| gptkbp:isotopes |
gptkb:Boron-10
gptkb:Boron-11 |
| gptkbp:massNumber |
10.81 u
|
| 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:Digital_River
|
| gptkbp:bfsLayer |
7
|