Boron Properties At Room Temperature

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 properties at room temperature.

The temperature at which the liquid gas phase change occurs. Density g cm 3 density is the mass of a substance that would fill 1 cm 3 at room temperature. Boron has interesting optical properties. Boron atoms are pink with bridging oxygens in red and four hydroxyl.

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 is used to dope silicon and germanium semiconductors modifying their electrical properties. At room temperature it is a poor electrical conductor but it is a good conductor at high temperatures.

Sublimation the transition of a substance directly from the solid to the gas phase without passing through a liquid phase. Boron is capable of forming stable covalently bonded molecular networks. 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. 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.

Boron carbide is used to make armored vehicles because of its strength. Elemental boron transmits portions of infrared light. The physical properties of boron depend on its allotrope. It is a metalloid with a standard atomic weight of 10 811.

The boron mineral ulexite exhibits natural fiberoptic properties. Boron does not react with air at room temperature but at higher temperatures it burns to form boron trioxide.