No

Nobelium-249

Protons (Z)

102

Neutrons (N)

147

Mass number

249

Half-Life

57.0 µs

Abundance

---

Mass

249.088 u

Mass Excess

81,790.0 keV

Spin

(5/2+)

Discovered

2003

Binding energy per nucleon

7,422 keV

Neutron separation energy

6,971 keV

Proton separation energy

2,449 keV

Decay Mode

Decay chain

Nobelium-249Z 102 · N 14757.0 µs
β⁺
α75%
β⁺51%
β⁺64.7%
EC99.88%
α~100%
β⁻~100%
α~100%
α~100%
β⁻100%
α~100%
α100%
β⁻100%
α~100%
α~100%
α99.992%
β⁻97.91%
α100%
β⁻100%
α100%