Structure of Atom

• Everything around us is made up of atoms.
• Atom is the smallest unit of matter and has all the chemical properties of a matter.
• Atom has a positively charged nucleus, which contains positively charged particles known as protons and neutral particles called neutrons.
• The nucleus is surrounded by negatively charged electrons.
• In a neutral atom, the number of protons is equal to the number of electrons.
• An atomic number of an element is directly related to its chemical and physical properties.