A periodic table is nothing but a systematic arrangement of the chemical elements, in a table form. This credit for this invention goes to the Russian scientist named, Dmitri Mendeleev. Since its invention, the periodic table has undergone number of changes. The periodic table is considered one of the most important reference, in studies related to chemistry. It consists of all the chemical elements known till date. The elements present in the periodic table are classified under different groups, depending on their chemical and physical properties. They are, metalloids, alkali metals, alkaline earth metals, transition metals, other elements, non-metals, halogens, noble gases and rare earth elements. In many of the groups, the member elements have similar properties. Metalloids : The elements that come under metalloids group, bear the properties of both metals and non-metals. Boron, Silicon, Germanium, Arsenic, Antimony, Tellurium and Polonium are the elements that a...