keywords: Geiger Muller counter, halogens, mass number, verification, radiation
The halogen and its compounds occupy group VII in the periodic table, and they display an almost perfect gradation in physical properties. The halogens constitute fluorine, chlorine, bromine, iodine and the more recently discovered radioactive element astatine. These halogens are used in the building up of quenching vapours which comprised of different types of detectors, such as the Geiger Muller Counter (GMC) used for measurement of all types of radiation; alpha, beta and gamma radiation. This work verified the relationship between the mass number and some other physical properties of halogens using a scatter graph to show the relationship between mass number against each of the respective halogens. All the properties of the halogens compound verified were obtained from literatures. The results show that the proton number, boiling and melting point, temperature and density at STP each have a linear relationship with the mass number. On the other hand, the heat of fusion shows a logarithmic dependence on the mass number. The obtained results from the verification were tested statistically and found to be reliable and accurate.