Radioactive Elements On Periodic Table

There are quite a few radioactive elements found on the periodic table. The nucleus of an atom comprises of protons and neutrons. When these are not in balance the atom disintegrates in many different ways and they emit radioactive radiation. Radioactive elements are not stable so in a periodic table you are going to find them under the unstable elements.More...

Why Was The Periodic Table Made ?

Dmitri Mendeleev, a Russian scientists and chemist, was the first person to develop the periodic table. He had extensive knowledge on chemicals and their behaviors under various circumstances. There are hundreds of chemical elements found in nature and each one had their own individual characteristics.More...

Why Was It Necessary To Create A Periodic Table ?

There was no necessity as such to cerate a periodic table. Dmitri Mendeleev who was a Prussian chemist and scientists researched extensively about matter and chemical elements. He found that element is a particle which cannot be divided further and it is the purest form of a chemical substance.More...

Who Developed The Periodic Table ?

The periodic table was developed by a Russian chemist called Dmitri Mendeleev. He was a chemist and scientists who specialized in studying composition, structure and properties of matter. In a periodic table, the chemical elements are set according to their numbers. These numbers are called atomic numbers.More...