Brief History Of The Development Of Periodic Table
The quest for discovery of new elements is ever increasing. At present, elements up to atomic number 118 are known. These elements include heavier radioactive man made elements and naturally occuring elements. Efforts to synthesize new elements are continuous process. It is difficult to study chemistry of large number of elements separately. Hence there is need to classify these elements. Classification of elements into groups and development of periodic law and Periodic Table are the consequences of systematizing the knowledge gained by number of scientists through their observations and experiments. Prominent attempts in this field are summarized below: