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Density g cm 3 density is the mass of a substance that would fill 1 cm 3 at room temperature.
Boron properties at room temperature. Relative atomic mass the mass of an atom relative to that of. The temperature at which the liquid gas phase change occurs. Elemental boron transmits portions of infrared light. 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.
Sublimation the transition of a substance directly from the solid to the gas phase without passing through a liquid phase. Boron is a poor room temperature conductor of electricity but its conductivity improves markedly at higher temperatures. Boron atoms are pink with bridging oxygens in red and four hydroxyl. Boron is used to dope silicon and germanium semiconductors modifying their electrical properties.
It is a metalloid with a standard atomic weight of 10 811. Boron forms several commercially important compounds. Boron filaments are used in the aerospace industry because of their high strength and lightweight. The physical properties of boron depend on its allotrope.
Boron is capable of forming stable covalently bonded molecular networks. 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 has interesting optical properties. Boron does not react with air at room temperature but at higher temperatures it burns to form boron trioxide.
Boron carbide is used to make armored vehicles because of its strength. Boron oxide b 2 o 3 is used in glassmaking and ceramics.
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