Mendeleev periodic table
After the failure of Newland’s Law of Octaves, a Russian chemist Dmitri Ivanovich Mendeleev tried to classify elements in 1872. At that time only 63 elements were known.Mendeleev periodic table is based on” atomic Masses of the elements and also on their similarities of chemical properties”.
In mendeleev periodic table explanation, he examined atomic masses and physical and chemical properties of the elements. For chemical properties, he took hydrogen and oxygen as they are very reactive in nature and forms compounds with most of the elements.In 2nd row of the periodic table, he put the formulae of hydrides and oxides formed by an element. Mendeleev put all the 63 elements in such a way that they are in order of increasing atomic masses. The table contains vertical columns called “groups” and horizontal rows called “periods”.
Mendeleev periodic law:
or
Mendeleev law:
Mendeleev Periodic Law states that “the properties of element in a periodic table are the periodic function of their atomic masses”.
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