Boron
Properties, Uses, & Facts
boron (B), chemical element, semimetal of main Group 13 (IIIa, or boron group) of the periodic table, essential to plant growth and of wide industrial application.
| atomic number | 5 |
|---|---|
| atomic weight | [10.806, 10.821] |
| melting point | 2,200 °C (4,000 °F) |
| boiling point | 2,550 °C (4,620 °F) |
| specific gravity | 2.34 (at 20 °C [68 °F]) |
| oxidation state | +3 |
| electron configuration | 1s22s22p1 |
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