Chemistry

ATOMIC NUMBER, RELATIVE ATOMIC MASSES, ISOTOPES AND CALCULATIONS

CONSTITUENTS OF AN ATOM Atoms are made up of sub-particles. Protons, electrons and neutrons. Proton has a positive charge, electron has a negative charge and neutron has no charge.   Atomic number and mass number The atomic number of an element is the number of protons in the nucleus of its atom. Mass number or […]

ATOMIC NUMBER, RELATIVE ATOMIC MASSES, ISOTOPES AND CALCULATIONS Read More »