TSR Wiki > Study Help > Subjects and Revision > Revision Notes > Chemistry > Definitions of Relative Atomic Mass, Isotope, Atomic No.
Atomic Number / Proton Number
Number of protons in the nucleus
Mass Number / Nucleon Number
Total number of protons and neutrons in the nucleus
Isotope
Atoms with the same atomic number but different number of neutrons therefore a different atomic mass.
Nuclides
A specific nucleus eg Cl - 35 and Cl - 37 Relative atomic mass: The mass of an atom to 1/12 of the mass of a carbon-12 atom.
Comments
