Nickel-58

Main isotopes of nickel

iso NA half-life DM DE (MeV) DP 58Ni 68.077% is stable with 30 neutrons 59Ni trace 7.6×104 y ε 0.0506 59Co 60Ni 26.223% is stable with 32 neutrons 61Ni 1.140% is stable with 33 neutrons 62Ni 3.635% is stable with 34 neutrons 63Ni syn 100 y β− 0.0669 63Cu 64Ni 0.926% is stable with 36 neutrons
Standard atomic weight (Ar)	58.6934(4)

Naturally occurring nickel (₂₈Ni) is composed of five stable isotopes; 58
Ni
, 60
Ni
, 61
Ni
, 62
Ni
and 64
Ni
with 58
Ni
being the most abundant (68.077% natural abundance). 26 radioisotopes have been characterised with the most stable being 59
Ni
with a half-life of 76,000 years, 63
Ni
with a half-life of 100.1 years, and 56
Ni
with a half-life of 6.077 days. All of the remaining radioactive isotopes have half-lives that are less than 60 hours and the majority of these have half-lives that are less than 30 seconds. This element also has 1 meta state.

...
Wikipedia