Question

Mendeleev’s periodic table is the most important step in the classification of elements. Justify.​

Answer 1

Mendeleev's periodic table is based on atomic masses of elements. It was the first successful attempt to classify all the known elements (63) that time. One of the most important advantage of this classification was that mendeleev predicted the physical and chemical properties of three elements : Eka-boron, Eka-silicon and Eka-aluminium. Therefore, Mendeleev’s periodic table is the most important step in the classification of elements...