The movement of electrons The electrons are negatively (- ve) charged particles, They revolve around the nucleus with very high speed, The electron has a negligible mass relative to that of the proton or...
The molecule The matter is composed of small building units called the molecules which are composed of tiny structural units called the atoms, and it is anything that has a mass and occupies space, The...
The atom The atom is the fundamental building unit of the matter, and it is the smallest individual unit of the matter which can share in the chemical reactions, Boyle, Thomas, Rutherford and Bohr...
The valency The valency is the number of electrons that an atom gains, loses or even shares during a chemical reaction, The valency is the number of electrons that an atom needs to gain or...
