Who among the following made the first observation on Platinum as a catalyst and discovered similar triads of elements that led to the development of the Periodic Table of elements?
Show answer & explanation
Correct answer: B
Explanation
The correct option is option 2 i.e. Johann Wolfgang Dobereiner.
| Johann Wolfgang Dobereiner | Johann Wolfgang Döbereiner was a German chemist who is best known for work that foreshadowed the periodic law for the chemical elements, and for inventing the first lighter, which was known as the Döbereiner's lamp. |
| He became a professor of chemistry and pharmacy at the University of Jena. | |
| Dobereiner discovered that the relative atomic mass of the middle element in each triad was close to the average of the relative atomic masses of the other two elements. |