As

Arsenic-77m

Protons (Z)

33

Neutrons (N)

44

Mass number

77

Half-Life

114.0 µs

Abundance

---

Mass

76.921 u

Mass Excess

-73,440.8 keV

Spin

9/2+

Discovered

1957

Binding energy per nucleon

8,690 keV

Neutron separation energy

9,221 keV

Proton separation energy

7,517 keV

Decay Mode

γArsenic-77100%

Decay chain

Arsenic-77Z 33 · N 44114.0 µs
γ100%
β⁻100%