12/8 - Notes: Part 4: History of the Periodic Table

Posljednje ažuriranje almost 4 years ago

------- created the first periodic table of elements in 1869

He began to notice patterns when he arranged the elements by increasing

When the patterns didn’t quite fit, Mendeleev left where there were missing elements.

He used his knowledge of the patterns to predict the existence of elements as most impressively, predicting their .

In 1913, a British chemist named Henry Mosely rearranged Mendeleev’s periodic table by increasing , which fixed several of the issues with the earlier table.