Mendeleev established the famous periodic law, which states that “element properties are a periodic function of their atomic weight.”
Mendeleev organised elements according to their atomic weights in a table known as the Periodic Table of Mendeleev.
One of the key differences between the Mendeleev periodic table and the modern periodic table is that it is based on atomic mass.
The current periodic table is organised according to the number of atoms.
Mendeleev’s periodic table did not include noble gases because they were unknown at the time.
In the modern periodic table, noble gases are classified as group-18.
Final Answer:
Mendeleev’s Periodic Table has the following advantages:
(i) Mendeleev’s table had some gaps.
Predicted the chemical properties of these elements, which were later discovered and had the predicted properties.
(ii) He arranged the elements in periods and groups very methodically.