Boron Properties At Room Temperature

Boron has interesting optical properties.

Boron properties at room temperature.

At room temperature it is a poor electrical conductor but it is a good conductor at high temperatures. 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 atoms are pink with bridging oxygens in red and four hydroxyl. Boron is a poor room temperature conductor of electricity but its conductivity improves markedly at higher temperatures.

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. Relative atomic mass the mass of an atom relative to that of. The physical properties of boron depend on its allotrope. Sublimation the transition of a substance directly from the solid to the gas phase without passing through a liquid phase.

Boron carbide is used to make armored vehicles because of its strength. It is a metalloid with a standard atomic weight of 10 811. 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. The temperature at which the liquid gas phase change occurs.

The boron mineral ulexite exhibits natural fiberoptic properties. Boron oxide b 2 o 3 is used in glassmaking and ceramics. Boron is capable of forming stable covalently bonded molecular networks. Elemental boron transmits portions of infrared light.

Boron forms several commercially important compounds. Boron is used to dope silicon and germanium semiconductors modifying their electrical properties.