The particles emitted when 3919K decay to 3919K 19 39 K decay to 19 39 K is

The particles emitted when ${}_{19}^{39}K{\text{decay to}}_{19}^{39}K$ is

Answer Details

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.