Beryllium: Difference between revisions
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Beryllium is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Be. Its [[atomic number]] (the number of [[proton]]s) is 4. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 9.012182, and is typically found as a [[solid]] in its elemental form. | Beryllium is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Be. Its [[atomic number]] (the number of [[proton]]s) is 4. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 9.012182 g•mol<sup> −1</sup>, and is typically found as a [[solid]] in its elemental form. | ||
Beryllium is considered to be a member of the "Alkaline Earth Metal" class of element. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 2471 °[[Celsius (unit)|C]], and a [[melting point]] of 1287 °C | Beryllium is considered to be a member of the "Alkaline Earth Metal" class of element. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 2471 °[[Celsius (unit)|C]], and a [[melting point]] of 1287 °C | ||
Revision as of 00:27, 17 April 2011
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Beryllium is a chemical element, having the chemical symbol Be. Its atomic number (the number of protons) is 4. It has a standard atomic weight of 9.012182 g•mol −1, and is typically found as a solid in its elemental form.
Beryllium is considered to be a member of the "Alkaline Earth Metal" class of element. At a pressure of 101.325 kPa, it has a boiling point of 2471 °C, and a melting point of 1287 °C
Beryllium is toxic to living organisms.
It is a strategic material in nuclear weapons, specifically acting as a neutron reflector surrounding the fission core, increasing its neutron density, and decreasing the size of the device. A beryllium reflector was first used operationally in the U.S. Mark 12 (nuclear weapon),