1. Atomic structure

We have studied that all objects are made up of tiny particles called atoms. In this chapter, we will discuss the structure of the atoms in a detailed manner. To understand the concept, let us consider iron rods, bricks and chalk.

Iron rods:

 

  

Bricks:

 

  

Chalk:

 

Do you have any idea about the size of an atom?
Let us discuss about size of the smaller objects like the tip of a pin, red blood cell, virus and dust particles to understand the size of an atom.

 

The size of the pin tip is about $1\times {10}^{-2}m$.

 

The size of the red blood cell is about $1\times {10}^{-4}m$.

 

The size of the atom is about$1\times {10}^{-10}m$.

 

By comparing all the sizes, atoms are the smallest of all. We cannot see the atoms through our naked eye; then, you can imagine the size of an atom. An atom is a thousand times smaller than the thickest human hair. It has an average diameter of \(0.0000000001\) \(m\) or $1\times {10}^{-9}m$.