Thulium: Difference between revisions
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imported>David Yamakuchi m (New page: {{subpages}}{{Basic elemental info}}<references/>) |
imported>Milton Beychok m (Replaced infobox,added content to infobox, edited the lede.) |
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{{Elem_Infobox | |||
|elName=Thulium | |||
|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>13</sup>6s<sup>2</sup> | |||
|no1= | |||
|no2= | |||
|no3= | |||
|no4= | |||
|properties=Silver-gray, soft, malleable and ductile metal. | |||
|compounds= | |||
|uses= | |||
|hazard= | |||
}} | |||
'''Thulium''' is a [[Chemical elements|chemical element]], having the [[chemical symbol]] Tm. Its [[atomic number]] (the number of [[proton]]s) is 69. It has a [[Atomic mass#Standard atomic weights of the elements|standard atomic weight]] of 168.9342 g•mol<sup> −1</sup> and is a [[solid]] in its elemental form. | |||
Thulium is considered a member of the "Lanthanide" class of elements. At a [[pressure]] of 101.325 k[[Pascal (unit)|Pa]], it has a [[boiling point]] of 1,950°[[Celsius (unit)|C]] and a [[melting point]] of 1,545 °C. | |||
Latest revision as of 00:24, 30 April 2011
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Thulium is a chemical element, having the chemical symbol Tm. Its atomic number (the number of protons) is 69. It has a standard atomic weight of 168.9342 g•mol −1 and is a solid in its elemental form.
Thulium is considered a member of the "Lanthanide" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 1,950°C and a melting point of 1,545 °C.