Md

Mendelevium-254m

Protons (Z)

101

Neutrons (N)

153

Mass number

254

Half-Life

28.0 m

Abundance

---

Mass

254.09 u

Mass Excess

83,500.0 keV

Spin

(3-)

Discovered

1970

Binding energy per nucleon

7,431 keV

Neutron separation energy

5,741 keV

Proton separation energy

3,134 keV

Decay Mode

Decay chain

Mendelevium-254Z 101 · N 15328.0 m
β⁺100%
α99.941%
α99.923%
α99.974%
α~100%
α~100%
β⁻100%
β⁻100%
α~100%
α~100%
α~100%
α100%
α99.98%
β⁻100%
β⁻99.976%
α100%
β⁻~100%
β⁻~100%
α100%