Thulium

Source: http://www.tabulka.cz/english/elements/show.asp?id=69

name Thulium
latin Thulium
french Thulium
german Thulium
symbol Tm
proton number 69
atomic weight 168.93421
Pauling electronegativity 1.25
electronic configuration [Xe] 4f135d06s2
1s22s22p63s23p63d104s24p64d105s25p64f135d06s2
melting point 1818 K, 1545°C, 2813°F
boiling point 2223 K, 1950°C, 3542°F
group -
period 6
state (by 20°C) solid
oxidation states +3

Discoverer

Year of discovery Discoverer
1879 Per T. Cleve


Copyright © 1998-2021 Jan Straka (straka@tabulka.cz)
All rights reserved.