{{Element | name=Beryllium | symbol=Be | anumber=4 | amass=9.01 amu | noe=4 | class=Standard Metal | cstructure=Hexagonal | color=Grey | date=1798 | discname=[[Fredrich Wohler]] | origname=Derived from the mineral Beryl. | uses=Spacecrafts, aircrafts, and missiles. | obtained=Beryl or Chrysoberyl. }}
{{Element | name=Beryllium | symbol=Be | anumber=4 | amass=9.01 amu | noe=4 | class=Standard Metal | cstructure=Hexagonal | color=Grey | date=1798 | discname=[[Fredrich Wohler]] | origname=Derived from the mineral Beryl. | uses=Spacecrafts, aircrafts, and missiles. | obtained=Beryl or Chrysoberyl. }}
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'''Beryllium''' is a chemical [[element]] that is highly toxic. Inhalation of beryllium-containing dust can cause severe damage to the [[lung]]s, or even death.
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'''Beryllium''' is the chemical [[element]] with [[atomic number]] 4. Its symbol is Be.
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==Chemical Properties==
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Beryllium melts at 1560 [[Kelvin]] (K) and boils at 2742K. In its solid elemental form it is metallic.
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==Isotopes==
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There is only one stable [[isotope]] of beryllium, <sup>9</sup>Be. A second isotope, <sup>10</sup>Be, is commonly produced in Earth's atmosphere and accumulates at the surface of the soil. <sup>10</sup>Be currently has a half-life of 1.36 million years and decays through [[proton]] capture to form a [[boron]] isotope, <sup>10sup>B.