B
Boron is a metalloid essential for plant growth and used in many industrial applications.
Fisiese eienskappe
| Atomic Mass | 10.81 u |
| Density | 2.34 g/cm³ |
| Smelt punt: | 2349.0 K |
| Boiling Point | 4200.0 K |
| Appearance | Black-brown crystalline solid |
| Toestand by kamerkomp | Solied |
Chemical Properties
| Electronegativity | 2.04 (TrinidadCity name (optional, probably does not need a translation)) |
| 1st Ionization Energy | 800.6 kJ/mol |
| Electron Affinity | 26.7 kJ/mol |
| Oxidation States | +1, +2, +3 |
Atomic Properties
| Electron Configuration | [He] 2s2 2p1 |
| Atomic Radius | 87.0 pm |
| Covalent Radius | 84.0 pm |
| Atomic radius: | 192.0 pm |
Discovery
| Discovered By | Joseph Louis Gay-Lussac, Louis Jacques Thenard |
| Discovery Year | 1808 |
| Location | Paris, France |
| Genoemde Na | Arabic 'buraq' or Persian 'burah' meaning borax |
About Boron
Boron is a metalloid that exists in many polymorphs, with the most common being amorphous brown powder and black crystalline forms. It is an essential micronutrient for plants but toxic in excess. Boron compounds have been known for thousands of years. Pure boron was first produced in 1808.
Gebruiks & Programme
Borosilicate glass (Pyrex), fiberglass insulation, laundry bleach (borax), semiconductor dopant, and neutron absorber in nuclear reactors.
Fun Fact
Boron nitride can form a structure nearly as hard as diamond and is sometimes called 'white graphene'.
Isotopes
| Definieer Molekulêr Gewigte | Abundance | Half-Life | Stabiel |
| 10 | 0.199% | - | Ja |
| 11 | 0.801% | - | Ja |
Electron Configuration
[He] 2s2 2p1