Question

With respect to the merits of the Mendeleev periodic table answer the following question

How was the study of elements made simpler and systematic?

Answer 1

• In Mendeleev's periodic table elements were arranged based on increasing atomic mass. During Mendeleev, only 63 elements were known so after studying the properties of elements he arranged them into vertical columns called groups and horizontal rows are called periods
• The study of elements was made simpler and systematic when elements were arranged in the increasing order of atomic mass and there was the periodic occurrence of elements with similar properties.