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Periodic Table - Elements - Boron
| Symbol |
B |
|
| Atomic Number |
5 |
Relative Atomic Mass
12C = 12.0000 |
10.811 |
Atomic Radius
pm |
83 |
First Ionisation Energy
kJ mol-1 |
800.6 |
| Electronegativity |
2.04 |
Density
kg m-3 |
2340 (β-rhomb.) [293 K] |
Molar Volume
cm3 |
4.62 |
Thermal Conductivity
W m-1 K-1 |
27.0 [300 K] |
Melting Point
K |
2573 |
Boiling Point
K |
3931 |
| Number of Isotopes |
6 |
Ground State Electron
Configuration |
[He]2s22p1 |
| Term Symbol |
2P1/2 |
| Discovery |
Discovered by L.J. Thenard and L.J. Lussac (Paris, France) and Sir H. Davey (London, England) in 1808 |
| Name Derived From |
Arabic buraq |
Name in Other
Languages |
 Croatian | Bor |
 Danish | bor |
 Dutch | boor |
 Finnish | boori |
 French | bore |
 German | Bor |
 Italian | boro |
 Norwegian | bor |
 Portuguese | boro |
 Spanish | boro |
 Swedish | bor |
| Peter van der Krogt's Element Multidict - element name translations in over 48 langauges |
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Page compiled: Wed Sep 05 18:37:53 GMT+01:00 2001
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