Question

Who is Dobreiner ? What was common in his proposed periodic table when compared to Mendeleef periodic table?​

Answer 1

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

The main difference between Mendeleev and Dobreiner Periodic Table is that Mendeleev's periodic table orders the elements based on their atomic mass whereas Modern periodic table orders the elements based on their atomic number.