#wikipedia.org. boron. Boron is a chemical element. It has the 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. As the lightest element of the boron group it has three valence electrons for forming covalent bonds, resulting in many compounds such as boric acid, the mineral sodium b
#Business #Science #commodities market
Filter: #nil ×
Showing 1-1 of 1 item - Time: 0.1195 s. Memory: 13.3892 mb.