Periodic Table of the Elements: Promethium

Related article: Periodic Table of the Elements (table)Periodic Table of the Elements
(showing atomic number and atomic symbol; click on atomic symbol for more detailed information)

Groups                                  
..... Click the link for more information.

Periodic Table of the Elements: Promethium
Atomic Number:61
Atomic Symbol:Pm
 Promethiumpromethium
, artificially produced radioactive chemical element; symbol Pm; at. no. 61; mass no. of most stable isotope 145; m.p. 1,042°C;; b.p. 3,000°C; (estimated); sp. gr. unknown; valence +3.
..... Click the link for more information.
Atomic Weight:(145)
Electron Configuration:2 · 8 · 18 23 · 8 · 2
Encyclopedia browser ?
Full browser ?