Answer :
The product's beta decay mode is consistent.
Cesium-139 decays by beta decay to either the radioactive isotope of stable barium-139 or to barium-139m, which is a meta-stable form of barium with a half-life of roughly 30 years.
In the environment, cesium-139 decays by releasing beta particles. As mentioned earlier, barium-139m is the short-lived decay product of cesium-139. The latter isotope gives out moderately energetic gamma radiation, which afterwards transforms into a stable form of barium.
C degrades through a process known as beta decay. One of the neutrons which are in the carbon atom turns into a proton during this process, which results in the decay of a carbon atom into a nitrogen atom. By adding one more proton to the atom, this results in the formation of a nitrogen atom rather than a carbon atom.
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