State the merits of Mendeleev’s periodic table.

1.	State the merits of Mendeleev’s periodic table.
Answer» Merits of Mendeleev’s periodic table: i. Mendeleev was the first to successfully classify all known elements. ii. Mendeleev’s periodic table had some vacant spaces in it. These were for elements that were yet to be discovered. iii. Mendeleev predicted properties of these elements even before they were discovered, which were later found to be correct. iv. When noble gases were discovered later, they were placed in Mendeleev’s periodic table without disturbing the positions of other elements.

Answer»

Merits of Mendeleev’s periodic table:

i. Mendeleev was the first to successfully classify all known elements.

ii. Mendeleev’s periodic table had some vacant spaces in it. These were for elements that were yet to be discovered.

iii. Mendeleev predicted properties of these elements even before they were discovered, which were later found to be correct.

iv. When noble gases were discovered later, they were placed in Mendeleev’s periodic table without disturbing the positions of other elements.

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