When an unstable Co-60 isotope undergoes alpha decay, the nucleus formed is

The correct answer would be : formed nucleus is that of Mn.

Explanation:

Alpha decay is a process that is exhibited by unstable molecules to be more stable. During the alpha decay nucleus of the unstable element removes its two protons and two neutrons in a bundle that researchers call an alpha molecule.

Since a particle loses two protons during alpha decay, it changes starting with one component then onto the next.

Co has 27 protons and neutron in its nucleus emits a alpha molecules that contain 2 protons and 2 neutrons

27=2+z

z =25 in periodic table  25 atomic number of Mn.

Thus, the correct answer would be : formed nucleus is that of Mn.