Transmutation is when an a nucleus changes
from one atom to another.
gamma decay is the e type of radioactive emission that
does not cause any transmutations, in a gamma decay, the nucleus is in the excited state and only
emits energy to return to ground or unexcited state, ,
secondly gamma
ray does contain any nuclear particle therefore its emission does not change
the number of nucleons in the atom. In other words the emission of gamma ray
does not change the atomic number or atomic mass of the parent nucleus and therefore after gamma
decay, the parent nucleus an daughter nucleus are the same
Example of
gamma emission are
6028Ni*
→6028Ni +
+ 1.33 MeV

here the parent and the daughter nucleus are the same therefore no trans mutation has occurred.
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