Thulium

From Citizendium
Revision as of 00:24, 30 April 2011 by imported>Milton Beychok (Replaced infobox,added content to infobox, edited the lede.)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
This article is a stub and thus not approved.
 Main Article
 Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
Properties [?]
 
https://en.citizendium.org/wiki/index.php?title=Thulium&printable=yes
This editable Main Article is under development and subject to a disclaimer.
Thulium
168.93421(2)



  Tm
69
1s22s22p63s23p63d104s24p6 4d105s25p64f136s2
[ ? ] Lanthanide:
Properties:
Silver-gray, soft, malleable and ductile metal.


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.

Retrieved from "https://citizendium.org/wiki/index.php?title=Thulium&oldid=739768"