Why are large nuclei like uranium radioactive?

Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons, the release of heat energy (kinetic energy of the nuclei), and gamma rays. The fission products themselves are usually unstable and therefore radioactive.

Why doesn’t uranium ore spontaneously undergo a chain reaction?

Why doesn’t a chain reaction normally occur in uranium mines? Only a small fraction of natural uranium is the fissionable U-235, so most of the released neutrons do not trigger another fission. “Chain reactions would occur in naturally occurring uranium ore deposits if all uranium atoms fissioned so easily.

What are nuclear fusion and fission reactions explain them in detail along with their significance?

Fusion is what powers the sun. Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.

How fission is energetically possible?

In order to initiate most fission reactions, an atom is bombarded by a neutron to produce an unstable isotope, which undergoes fission. When neutrons are released during the fission process, they can initiate a chain reaction of continuous fission which sustains itself.

When fission occurs the resulting nuclei are called?

Nuclear fission is a process where the nucleus of an atom is split into two or more smaller nuclei, known as fission products.

Does uranium undergo nuclear fusion reaction?

Uranium does not undergo a fusion reaction. It undergoes fission reaction due to the presence of a heavy unstable nucleus.

In what way are fission and fusion reactions similar What are the main differences in these reactions?

Both fission and fusion are nuclear reactions that produce energy, but the applications are not the same. Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.

What do nuclear fusion and fission have in common?

Fusion and fission are similar in that they both release large amounts of energy. Nuclear fusion is a process in which two nuclei join to form a larger nucleus. Nuclear fission is a process in which a nucleus splits into two smaller nuclei.