Radium: Difference between revisions
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imported>David Yamakuchi m (New page: {{subpages}}{{Basic elemental info}}<references/>) |
imported>Milton Beychok (Replaced the info box and edited the lede somewhat) |
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|eltrnCfg=1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup>3d<sup>10</sup>4s<sup>2</sup>4p<sup>6</sup> 4d<sup>10</sup>5s<sup>2</sup>5p<sup>6</sup>4f<sup>14</sup>5d<sup>10</sup>6s<sup>2</sup>6p<sup>6</sup>7s<sup>2</sup> | |||
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|hazard=Highly radioactive | |||
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'''Radium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Ra. Its [[atomic number]] (the number of [[proton]]s) is 88. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 226 g•mol<sup> −1</sup> and it is a [[solid]] in its elemental form. | |||
Radium is considered a member of the "Alkali earth metal" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 1,737 °[[Celsius (unit)|C]] and a [[melting point]] of 700 °C. | |||
Latest revision as of 20:07, 2 May 2011
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Radium is a chemical element, having the chemical symbol Ra. Its atomic number (the number of protons) is 88. It has a standard atomic weight of 226 g•mol −1 and it is a solid in its elemental form.
Radium is considered a member of the "Alkali earth metal" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 1,737 °C and a melting point of 700 °C.