Every element has unique properties and behaved differently when their atomic weight was increased. He studied these properties and then organized them into a table. Dmitri's periodic table segregated the chemical elements based on their properties like weight, stability and reaction. He grouped stable gases under one portion of the table, like for example oxygen, fluoride and neon are all stable gases, and you can find them under one column. As the atomic of many of the gases and metals increased their properties change. However, the table is usually refereed to based on the nature first and then chemical properties next.

Dmitri’s contribution to the world of chemistry is tremendous and ever since the periodic table was found it has become very easy to organize these chemicals. However, even though Mendeleev's periodic table arranged chemical elements based on their atomic weights, the modern periodic table follows the atomic numbers. The atomic numbers signifies the number of protons in the atom and when this number increases the weight also increases automatically.

Mendeleev was also nominated for the Nobel Prize for his development. He got credit for his work only fifty years later and the one hundred and first element on the periodic table was named after him and was called the Mendelevium.

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