Periodic table
en
fr
ar
es
pt
id
List
Compare
Tables
Quiz
Tools
Printables
Periodic table
›
krypton
›
Kr-84
Krypton-84 (Kr-84)
Identity
Protons
36
Neutrons
48
Mass number
84
Mass
83.9115 ± 0.0041 u
Mass excess
-82.439 MeV
Spin
0+
Stability
stable
Natural occurrence
56.99 %
of krypton
Produced by
Rb-84
All isotopes of krypton