The particles emitted when ( ^{39}_{19}K text{ decay to } ^{39}_{19}K ) is
-
A.
gamma -
B.
beta -
C.
electron -
D.
alpha
Correct Answer: Option A
Explanation
3919K 3919K.
Since neither the mass number (39), nor the atomic number (19) is affected by the emission,the particles emitted can only be gamma ray, which is not a charge particle, but simply a radiation.