Question

Mendeleev arranged the elements in increasing order of their atomic masses and according to their physical properties.

• A. True
• B. False

Answer 1

The correct option is B False

In 1869, just five years after Newlands put forward his Law of Octaves, a Russian chemist called Dmitri Mendeleev published a periodic table. Mendeleev also arranged the elements known at the time in order of relative atomic mass, but he did some other things that made his table much more successful. Hence he arranged according to atomic masses and their chemical properties.