Question

What are the merit and demerit of modern peroidic table

Answer 1

The following are the advantages of Modern Periodic table.

1. All elements are fundamentally arranged according to their atomic number. So it becomes easy to understand and compare their properties, thereby making it easier to remember the position of the elements

2. The position of the elements in the periodic table makes it easy to predict and compare their properties, and explains the reason for their specific position in the periodic table.

3. It gives explanation for the periodicity of elements and tells the reason why all elements in a group having similar properties, which differ between the gropus and periods.

4. Positions of isotopes are taken care of within th elemen itself, unlike in Mendeleev periodic table.

5. In the Modern periodic table, the metals, non-metals, transition metals, gases are separately placed in a specific location with a specific identity.

Disadvantages

1.Position of hydrogen is not satisfactory, it can be placed either in group I or 17 group of the first period

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2.It fails to accommodate lathanides and actinides in the main body of the periodic table. These are kept separately at the bottom of the periodic table.