How did Mendeleev use the modern periodic table of elements ?

1.	How did Mendeleev use the modern periodic table of elements ?
Answer» Dmitri Ivanovich Mendeleev, a Russian scientist arranged the elements in increasing order of their relative atomic masses. He was honoured with Noble prize in 1906 for his Periodic Table.Mendeleev’s Periodic Law states that the\xa0properties of elements are the periodic function of their relative atomic masses.Mendeleev arranged all 63 elements; which were discovered till his time; in the order of their increasing relative atomic masses in a tabular form. It is known as Mendeleev’s Periodic Table. He divided the table in eight columns and seven rows. The columns are known as groups and rows are known as periods.\tElements are arranged in the periodic table in the increasing order of their relative atomic masses.\tMendeleev divided his periodic table in eight groups and seven periods.\tGroups from I to VII are meant for normal elements and group VIII is for transition elements.\tGroups from I to VII have been divided in two sub groups, while group VIII is meant for three elements.\tPeriods from 4th to 7th have been divided in two series: 1st series and 2nd series.\tElements having similar properties have been kept in the same group. For example; lithium, potassium, rubidium, etc. are in 1st group.

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