Mendeleev’s periodic table is, based on the relation of properties of elements as dependent on the atomic weight of the element.
Characteristics of Mendeleev’s periodic table:
- In Mendeleev periodic table, vertical columns in the periodic table and horizontal row in the periodic table were named as groups and period respectively.
- The periodic table is composed of seven horizontal rows or periods and is numbered between 1 and 7.
- There is a regular gradation in the properties of elements in the horizontal rows(periods) from left to right.
- The periodic table is composed of eight vertical columns or groups. They ‘re numbered between 1 to 8.
- If the element is similar but not much, to distinguish between them it is placed below and slightly away from it. Thus, each column will have two sub-columns A and B, so elements will show more similarity in the same sub-columns.