Classification of Metals
While you go for classification of metals, the criteria considered are its atomic structure, crystal and lattice structures, electronegativity, density or specific gravity, Poisson's ratio and modulus elasticity. The modern periodic table designed by Dmitri Mendeleev, classifies the metals according to their periodic trends, physical properties, and chemical behavior. Based on their chemical properties, we have categorized metals as Alkali metals, Alkaline earth metals, Lanthanides, Actinides and transition Metals. The comparison between the Precious Metals, for example, Gold vs Platinum or Gold vs Palladium are also provided. So now, go ahead and compare metals of the basis of their various parameters.