Element symbol: B
Enterprise standard: Q/ ylh002-2006
In the periodic table, the monomer boron is in a special position to divide elements into metal and nonmetal, which is dominant in non-gold properties. Boron has strong electronegativity, small atomic radius, concentrated nuclear charge, and nonmetal properties similar to silicon. Its density is 2.35g/cm3. Hardness 9.3, specific gravity 2.33-2.45, melting point: 2300℃, boiling point: 2550℃.
