Question

Write any five advantages of modern periodic law.

Answer 1

• The table is based on a more fundamental property i.e., atomic number. 
• It correlates the position of the element with its electronic configuration more clearly. 
• The completion of each period is more logical. In a period, as the atomic number increases, the energy shells are gradually filled up until an inert gas configuration is reached. 
• Each group is an independent group and the idea of subgroups has been discarded. 
• One position for all isotopes of an element is justified, since the isotopes have the same atomic number.