GENERAL KNOWLEDGE

Detailed explanation-1: -The first long-lived matter particles of any kind were protons and neutrons, which together make up the atomic nucleus. These came into existence around one ten-thousandth of a second after the Big Bang.

Detailed explanation-2: -The first subatomic particle to be identified was the electron, in 1898. Ten years later, Ernest Rutherford discovered that atoms have a very dense nucleus, which contains protons. In 1932, James Chadwick discovered the neutron, another particle located within the nucleus.

Detailed explanation-3: -Particle physicists have invented lots of names for the fundamental particles of matter. There are four major names, four major groups: leptons, hadrons, quarks and antimatter.