Question

The discovery of what element showed the usefulness of Mendeleev’s periodic table?

Answer 1

Initially Mendeleev arranged the elements in the periodic table from lightest to heaviest elements. Then the periodic table was named as Mendeleev’s periodic table. Before Mendeleev the properties of the chemicals are known.

Complete answer:
- In the question it is asked about the discovery of the elements which shows the usefulness of the Mendeleev’s periodic table.
- Mendeleev discovered three elements and named them as ekasilicon, scandium and ekaboron.
- Later the properties of the elements are characterized and named them as germanium, gallium and scandium.
- The elements present in the Mendeleev’s periodic table were not characterized fully at the time of publication of the periodic table.
- Later on a lot of new elements are discovered and characterized and placed in the periodic table according to their properties like atomic number, metallic character and etc.
- Now every chemist and physicist is not there without using the periodic table in their research or in their daily life.
- The Mendeleev’s periodic table was a close match to the properties of the newly discovered gallium.
- This type of detailed prediction explains the usefulness of the Mendeleev’s periodic table.
- Therefore the Mendeleev’s periodic table has a lot of importance in the field of science.

Note:
Mendeleev’s periodic table has some gaps and the appropriate chemicals with the respective properties to fill the gaps are not known still. The newly discovered elements are going to be placed in the periodic table with their nature and properties.