Atomic Properties
- Atomic Number
- 5
- Atomic Mass
- 10.8100 u
- Electron Configuration
- [He] 2s2 2p1
- Electronegativity
- 2.04
- Block
- p-block
- Group
- 13
- Period
- 2
Physical Properties
- Phase (STP)
- solid
- Melting Point
- 2349.00 K
- Boiling Point
- 4200.00 K
- Density
- 2.3400 g/cm³
About Boron
Metalloid used in glass, ceramics, and as a semiconductor dopant.
Isotopes of Boron
Boron has 2 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 10B | 10 | 10.01293695 | 19.90% | Stable |
| 11B | 11 | 11.00930536 | 80.10% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)