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Periodic table
›
lead
›
Pb-207
Lead-207 (Pb-207)
Identity
Protons
82
Neutrons
125
Mass number
207
Mass
207.0 ± 1.2 u
Mass excess
-22.452 MeV
Spin
1/2-*
Stability
stable
Natural occurrence
22.10 %
of lead
Produced by
Bi-207
All isotopes of lead