An electron is a subatomic particle that carries a negative electric charge. It is one of the fundamental building blocks of matter, along with protons and neutrons, which make up the nucleus of an atom.

Electrons were first discovered by British physicist J.J. Thomson in 1897, using a cathode ray tube experiment. Thomson found that cathode rays were made up of negatively charged particles, which he called electrons.

Electrons are found outside the nucleus of an atom, in regions known as orbitals or energy levels. They are involved in chemical reactions, Admission Management, bonding with other atoms to form molecules. The behavior of electrons in atoms is described by quantum mechanics, a branch of physics that deals with the behavior of particles on a very small scale.

Electrons also play an important role in electricity and electronics. When they flow through a conductor, such as a wire, they create an electric current, which can be harnessed for a variety of purposes, from powering electrical devices to transmitting information over long distances.

In recent years, scientists have made significant advances in our understanding of the behavior and properties of electrons, including their wave-particle duality and their ability to exhibit quantum entanglement. These discoveries have led to new technologies and applications in fields such as quantum computing and materials science.