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Merits of Mendeleev periodic table?

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Merits of Mendeleev periodic table?

Posted by Raman Upadhyay 5 years, 6 months ago

CBSE > Class 10 > Science

5 answers

Tanisha ?? 5 years, 6 months ago

1. There was a regular gradation in physical and chemical properties of elements. 2. The group number of an element indicates highest oxidation state that it can attain. 3. There were many vacant spaces in Mendeleev's periodic table for the elements to be discovered. He named them Eka-Boron, Eka-Aluminium and Eka-silicone He also predicted the properties of these undiscovered elements including atomic masses. These elements were discovered as Sc ,Ga and Ge with same features as he predicted. 4. Mendeleev’s arrangement helped to correct atomic masses of a number of elements.

Ishika ? 5 years, 6 months ago

2. When noble gasses was discovered hel could add it to periodic table without any major change.☺️☺️☺️

Ishika ? 5 years, 6 months ago

1. He left blank places which help scientists to discover new element.??

Raman Upadhyay 5 years, 6 months ago

Thanks and welcome back

Lucifer ? Morningstar? 5 years, 6 months ago

Some gaps were left for the elements yet to be discovered. Thus, if a certain new element is discovered, it can be placed in a new group without disturbing any existing group.

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