Madhya Pradesh Police Exam Model Paper 1

The correct answer is Protons, electrons, and neutrons .

Explanation:

• The smallest unit of an element which has all the chemical properties of the element is called an atom.
• Atoms are made of the three smallest particles- electrons, protons, and neutrons .
• The protons and neutrons remain in the nucleus of the atom and electrons revolve around the nucleus .
• The electrons are negatively charged protons are positively charged and neutrons are neutral .

So, Atoms are mainly made of protons, electrons, and neutrons .