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Periodic table
›
lead
›
Pb-204
Lead-204 (Pb-204)
Identity
Protons
82
Neutrons
122
Mass number
204
Mass
204.0 ± 1.2 u
Mass excess
-25.110 MeV
Spin
0+
Stability
stable
Natural occurrence
1.400 %
of lead
Produced by
Tl-204
Po-208
All isotopes of lead