Structure of an atom

 Structure of an atom

An atom is the smallest unit of matter that retains all of the chemical properties of an element.

An atom consists of two regions. The first is the tiny atomic nucleus, which is in the center of the atom and contains positively charged particles called protons and neutral, uncharged, particles called neutrons. The second, much larger, region of the atom is a “cloud” of electrons, negatively charged particles that orbit around the nucleus. 

The attraction between the positively charged protons and negatively charged electrons holds the atom together. Most atoms contain all three of these types of subatomic particles—protons, electrons, and neutrons.

For example: A sand castle is a very large number of sand atoms molded into the shape of castle. If the castle is demolished, it will become sand stones which will still retaining the properties of sand crystal. A sand crystal atom gets its properties from the tiny subatomic particles it's as shown in below.

To understand the structure of atom; please click the link below 

https://youtu.be/03iWCjxjCdA