$^{14}C$ is

Radioactive isotopes that have an excessive neutron/proton ratio generally exhibit

The proper rays for radiocarbon dating are

In a nuclear explosion, the energy is released in the form of

Who observed that when the nucleus of a uranium atom was bombarded with fast-moving neutrons,it became so unstable that it immediately broke into two nuclei of nearly equal mass,besides other fragments?

The number of neutrons in the parent nucleus which gives $^{14}N$ on $\beta$-emission is