Chapter 19, Problem 19.72SP

Interpretation Introduction

Interpretation:

Whether statement is correct or incorrect about nuclear energy.

Conceptual Introduction:

Natural uranium is a mixture of two isotopes ${\text{U}}^{\text{238}}{\text{and}}^{}{\text{ U}}^{\text{235}}$ in the ration $1:145$. The isotope ${\text{U}}^{\text{238}}$ can be fission by fast moving neutron. While ${\text{U}}^{\text{235}}$ can also be fission by slow moving neutron. Thus when slow neutron strikes U²³⁵nucleus it is captured by the nucleus and new nucleus of ${\text{U}}^{\text{236}}$ is formed.

  ${}_{\text{92}}{\text{U}}^{\text{235 }}{\text{+}}_{\text{0}}{\text{n}}^{\text{1 }}\to {}_{\text{92}}{\text{U}}^{\text{236}}\to {}_{\text{56}}{\text{Ba}}^{\text{141}}{\text{ + }}_{\text{36}}{\text{Kr}}^{\text{92 }}{\text{ + 3}}_{\text{0}}\text{n1 + Energy}$

In general fission fragments are found to be radioactive isotopes of element lying in mass no. range roughly through $\text{70 to 160}$. All fragments undergoes several beta decay until they reach some stable energy products.

To determine:

Statement is correct or not.

Solutions:

a)True
b)True
c)True
d)True
e)True