Periodic table
en
fr
ar
es
pt
id
List
Compare
Tables
Quiz
Tools
Printables
Periodic table
›
samarium
›
Sm-154
Samarium-154 (Sm-154)
Identity
Protons
62
Neutrons
92
Mass number
154
Mass
153.9 ± 1.4 u
Mass excess
-72.456 MeV
Spin
0+
Stability
stable
Natural occurrence
22.74 %
of samarium
Produced by
Eu-154
All isotopes of samarium