Question

what were the criteria used by mendeleev in creating his periodic table?​

Answer 1

Answer:

So scientists started discovering some pattern in their properties to classify all the known elements to make their study easier. (b) Atomic mass and similarity of chemical properties ( compounds formed by elements with oxygen and hydrogen )were the two criteria used by Mendeleev in his Periodic Table.

Answer 2

In Mendeleev's periodic table, elements were arranged in the order of their increasing atomic masses and it was also observed that there occurs a periodic recurrence of elements with similar physical and chemical properties.