Md

Mendelevium-251

Protons (Z)

101

Neutrons (N)

150

Mass number

251

Half-Life

4.21 m

Abundance

---

Mass

251.085 u

Mass Excess

78,967.0 keV

Spin

(7/2-)

Discovered

1973

Binding energy per nucleon

7,442 keV

Neutron separation energy

7,504 keV

Proton separation energy

2,394 keV

Decay Mode

Decay chain

Mendelevium-251Z 101 · N 1504.21 m
α10%
β⁺93%
EC99.965%
α100%
α~100%
β⁻100%
α~100%
α~100%
β⁻100%
α~100%
β⁻98.62%
α100%
α~100%
α100%
α~100%
β⁻100%
α~100%
β⁻100%