How is the modern periodic table different from Dmitri Mendeleev's table?

Question

Chemistry

Krista Walls

22 September, 07:21

How is the modern periodic table different from Dmitri Mendeleev's table?

+5

Answers (2)

Know the Answer?

Heather Dawson · Answer 1

Mendeleev ordered the elements in his periodic table according the atomic mass of the element, whereas the modern day periodic table has the elements ordered according to their Atomic number (or the Proton Number).

Dominick · Answer 2

In the modern periodic table, the elements are arranged in order of increasing atomic number. (In Mendeleev's table, they were arranged in order of increasing atomic weight). More elements are in the modern periodic table which have been discovered since Mendeleev's time.