Fermium: Difference between revisions
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{{Elem_Infobox | |||
|elName=Fermium | |||
|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>5f<sup>12</sup> 7s<sup>2</sup> | |||
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|properties= | |||
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|hazard=Radioactive and toxic. | |||
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'''Fermium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Fm. Its [[atomic number]] (the number of [[proton]]s) is 100. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 257 g•mol<sup> −1</sup> and it is a [[solid]] in its elemental form. | |||
Fermium is considered a member of the "Transuranic" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[melting point]] of 1,527 °[[Celsius (unit)|C]]. There is no data available regarding its [[boiling point]]. | |||
It was named after the [[Nobel Prize|Nobel laureate]] Enrico Fermi and was first identified in December 1952 by [[Albert Ghiorso]] and co-workers at the [[University of California, Berkeley]] in collaboration with the [[Argonne National Laboratory|Argonne]] and [[Los Alamos National Laboratory|Los Alamos National Laboratories]]. It was found in coral contaminated by the [[Operation Ivy#Ivy Mike|Ivy Mike]] nuclear test on November 1, 1952 at [[Enewetak Atoll]] in the [[Pacific Ocean]].<ref>[http://periodic.lanl.gov/100.shtml Los Alamos National Laboratory (LANL)]</ref><ref>[http://www.rsc.org/chemsoc/visualelements/pages/data/fermium_data.html Fermium - Fm] From the website of the [[Royal Society of Chemistry]].</ref><ref>[http://www.lbl.gov/today/2005/Jul/11-Mon/ghiobio-jump.html Al Ghiorso's Long and Happy Life] From the website of the [[Lawrence Berkeley National Laboratory]] (LBNL)</ref> | |||
==References== | |||
{{reflist}} | |||
Latest revision as of 21:13, 3 May 2011
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Fermium is a chemical element, having the chemical symbol Fm. Its atomic number (the number of protons) is 100. It has a standard atomic weight of 257 g•mol −1 and it is a solid in its elemental form.
Fermium is considered a member of the "Transuranic" class of elements. At a pressure of 101.325 kPa, it has a melting point of 1,527 °C. There is no data available regarding its boiling point.
It was named after the Nobel laureate Enrico Fermi and was first identified in December 1952 by Albert Ghiorso and co-workers at the University of California, Berkeley in collaboration with the Argonne and Los Alamos National Laboratories. It was found in coral contaminated by the Ivy Mike nuclear test on November 1, 1952 at Enewetak Atoll in the Pacific Ocean.[1][2][3]
References
- ↑ Los Alamos National Laboratory (LANL)
- ↑ Fermium - Fm From the website of the Royal Society of Chemistry.
- ↑ Al Ghiorso's Long and Happy Life From the website of the Lawrence Berkeley National Laboratory (LBNL)