Boron
Chemical element
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Boron is a chemical element; it has symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder. Wikipedia
Symbol: B
Atomic number: 5
Atomic mass: 10.811 u
Electron configuration: [He] 2s² 2p¹
Electrons per shell: 2,3
Discoverers: Humphry Davy, Louis Jacques Thénard, and Joseph Louis Gay-Lussac
Melting point: 3,769°F (2,076°C)