Final answer:
The isotope Ni decays to Cu by emitting gamma radiation.
Step-by-step explanation:
The isotope Ni decays to Cu by emitting gamma radiation.
In the process of decay, cobalt-60 is initially formed by the neutron activation of cobalt-59. Cobalt-60 undergoes decay to form nickel-60, along with the emission of gamma radiation. Gamma rays are high-energy electromagnetic waves that are emitted during radioactive decays.
Gammy rays are used for various applications, including cancer therapy.