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Who discovered Periodic Table? How was it made? How is this helpful to us?
Dmitri Mendeleev was the first to publish a version of the periodic table.
Mendeleev found that, when all the known chemical elements were arranged in order of increasing atomic weight, the resulting table displayed a repeating pattern of properties of elements.
The modern periodic law states that the properties of the elements are a periodic function of their atomic numbers. The modern periodic table is based on Modern periodic law. In this table, the elements have been arranged in order of increasing atomic numbers.
Uses:
- The study of the properties of elements became easier as all known elements were classified in a group according to their similar properties for the first time.
- It encouraged the discovery of new elements as some gaps were left in it. Mendeleev gave details on the position and properties of the elements like Sc, Ge, and Tc before they were discovered and even left blank spaces for them in his table.
- Properties of elements in a particular period of the table show regular gradation (i.e. increase or decrease) from left to right.
- In this periodic table, the elements in a particular group share similar properties. They show a regular gradation in their physical properties and chemical reactivities.
Updated on: 10-Oct-2022
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