Boron

Metalloid

Boron (B) is element 5, a metalloid, in period 2 and group 13 of the periodic table. Its standard atomic weight is 10.81, it melts at 2076 °C and boils at 3927 °C. Discovered by Joseph Louis Gay-Lussac, 1808.

Atomic Number5

SymbolB

NameBoron

Atomic Weight10.81 u

CategoryMetalloid

Period2

Group13

Melting Point2076 °C

Boiling Point3927 °C

Density2.34 g/cm³

Electron Config[He] 2s2 2p1

Discovered ByJoseph Louis Gay-Lussac, 1808

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