THE ELECTRON

 An electron is a subatomic particle with a negative electrical charge. It is a fundamental constituent of all atoms, orbiting the positively charged nucleus. Electrons are elementary particles, meaning they are not made of smaller components. 

Electrons carry a negative electrical charge, which is balanced by the positive charge of protons in the nucleus of an atom. 

Electrons reside in orbitals around the atom's nucleus, at varying energy levels. 

Electrons are considered elementary particles, meaning they are not composed of smaller constituents.

Electrons play a crucial role in chemical bonding and the behaviour of atoms and molecules.

The electron was discovered by J.J. Thomson in 1897 during experiments with cathode rays. 

Electrons exhibit both wave-like and particle-like properties.