➥Elements are typically classified as either a metal or nonmetal, but the dividing line between the two is fuzzy. Metal elements are usually good conductors of electricity and heat. The subgroups within the metals are based on the similar characteristics and chemical properties of these collections.➥The periodic law given earlier is now modified and followed today. It states that "the properties of the elements are periodic functions of their atomic numbers." ... "the properties of elements are periodic functions of their atomic number.➜The next thing in our review is to classify the elements into three groups. These three groups are: metals, nonmetals, and inert gases. Let's look at where these groups are located on the periodic table and correlate them with the ability to lose and gain electrons.➥Each matter or material is classified as mixture, compounds, elements. There are many elements which you can refer to in periodic table. Every element contains atoms and atoms consist of electrons, protons and neutrons, and the electrons rotate in every atom. ... Each natural frequency of the material is called resonance.