Boron Properties At Room Temperature

Boron has interesting optical properties.

Boron properties at room temperature.

It is a metalloid with a standard atomic weight of 10 811. It is solid at room temperature with a melting point of 3769 f 2349 k and a boiling point of 7101 f 4200 k at atmospheric pressure. Elemental boron transmits portions of infrared light. Boron carbide is used to make armored vehicles because of its strength.

Sublimation the transition of a substance directly from the solid to the gas phase without passing through a liquid phase. The temperature at which the liquid gas phase change occurs. Relative atomic mass the mass of an atom relative to that of. Boron 10 one of the naturally occurring isotopes of boron is a good absorber of neutrons and is used in the control rods of nuclear reactors as a radiation shield and as a neutron detector.

4 b 3 o 2 2 b 2 o 3 ball and stick model of tetraborate anion b 4 o 5 oh 4 2 as it occurs in crystalline borax na 2 b 4 o 5 oh 4 8h 2 o. Boron is used to dope silicon and germanium semiconductors modifying their electrical properties. Boron oxide b 2 o 3 is used in glassmaking and ceramics. Boron filaments are used in the aerospace industry because of their high strength and lightweight.

Boron does not react with air at room temperature but at higher temperatures it burns to form boron trioxide. Boron is capable of forming stable covalently bonded molecular networks. At room temperature it is a poor electrical conductor but it is a good conductor at high temperatures. Boron is a poor room temperature conductor of electricity but its conductivity improves markedly at higher temperatures.

Boron forms several commercially important compounds. The physical properties of boron depend on its allotrope.