92.3k views
2 votes
In what important way was Mendeleev’s Periodic Table different from the modern Periodic Table?

User Doug
by
7.8k points

1 Answer

2 votes
He ordered elements based on their atomic mass instead of their number of protons
User Nohora
by
8.3k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.