Which of the following represents gamma emission?
(apex)

a. 228 89 ac - 228 90 th+b
b. 212 83 bi - 212 84 po+0-1e
c. 60 28 ni - 60 28 ni+y
d. 220 86 rn - 216 84 po+4 2 he

C.

Explanation:

Gamma Emission  :

When a nucleus is excited , it become unstable .To gain stability it comes back to lower energy state by emitting high-energy electromagnetic radiation .This radiation is called gamma radiation.

Symbol :

: Gamma

There is no change in mass number and atomic number during gamma emission

In A,B,D mass number or atomic number has changed, So no Gamma emission take place.

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