Question

The reaction represents $_{92}{U^{235}}{ + _{.0}}{n^1}{ \to _{56}}B{a^{140}}{ + _{36}}K{r^{93}} + 3$ represent.
A. Artificial radioactivity
B. Nuclear fission
C. Nuclear fusion
D. None of the above

Answer 1

In the given question reaction of uranium and neutron is asked. In this reaction, the sum of the masses of the products is slightly less than the sum of the masses of the reactants. We have to keep in mind the concept of mass decay.

Complete Step by step answer:
When a uranium-235 nucleus absorbs a slow-moving neutron, different nuclear reactions might occur. One of these reactions is as follows as the complete, balanced equation below. Nuclear fission is a procedure by which a large nucleus can split into two smaller nuclei, or in the fission fragments and this nuclear fission takes place after the nucleus absorbs a neutron that usually is a product of another atom's radioactive decay. The newly-formed fission fragments have highly unstable neutron to proton ratios, which makes them really radioactive.

Neutron-induced fission can be understood as First, energy is placed into the large nucleus when it absorbs a neutron which might act like a struck liquid drop and then the nucleus distorts and initiates to narrow in the middle. Subsequently fewer nucleons are in contact and the repulsive Coulomb force is able to break the nucleus into two parts with some neutrons also flying away.
In the case of Uranium-235, nuclear fission creates a wide variety of fission fragments. Thus, is a typical neutron-induced fission reaction.

Hence, option B is correct.

Note: As a fascinating fact, Italian physicist Enrico Fermi was the first person to achieve nuclear fission in a laboratory. He bombarded uranium with slow neutrons and found what he incorrectly identified as radium.