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List of Metals - Science Notes and Projects
Periodic Table - Ptable
List of chemical elements - Wikipedia
List of All Elements Considered to Be Metals - ThoughtCo
Metals, Metalloids, and Nonmetals - Element Classification Groups
Periodic Table of Elements - PubChem
Periodic table | Definition, Elements, Groups, Charges, Trends,
Periodic table - Wikipedia
Periodic Table of Elements - American Chemical Society
Interactive Periodic Table of the Elements | Symbols, Atomic …