Chapter 20, Problem 51QP

Interpretation Introduction

Interpretation:

The statement, “Heavy elements, such as uranium, undergo nuclear fission, whereas lighter elements, such as hydrogen and lithium, undergo fusion”is to be explained.

Concept introduction:

Nuclear fusion is a process in which various nuclei combine to form heavier nuclei. This is also called a nuclear reaction.

In this process, appreciable amount of energy is released.

Nuclear fusion takes place only at high temperature, they are called thermonuclear reaction.

Nuclear fission is a type of nuclear reaction in which an atom’s nucleus is broken down into lighter nuclei.

This process of nuclear fission occurs because the heavy nucleus is less stable than its product.

In this process, large amount of energy is released.