Pb

Lead-201

Protons (Z)

82

Neutrons (N)

119

Mass number

201

Half-Life

9.33 h

Abundance

---

Mass

200.973 u

Mass Excess

-25,271.0 keV

Spin

5/2-

Discovered

1950

Binding energy per nucleon

7,878 keV

Neutron separation energy

7,091 keV

Proton separation energy

5,513 keV

Decay Mode

β⁺Thallium-201100%

Decay chain

Lead-201Z 82 · N 1199.33 h
β⁺100%
EC100%