File:The Long-form Periodic Table.png
Summary
| Description |
English: This is currently (as in 2020) the widely used version of the periodic table |
| Date | |
| Source | Own work |
| Author | AnthonyDu0122 |
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This periodic table is missing 2 radioactive elements from the f block: Pm (Z = 61) and Np (Z = 93) which have been known since the 1940's. Pm (Promethium) should be between Nd and Sm; Np (Neptunium) should be between U and Pu. See https://rubenmeerman.com/periodic-table/ for a correct version of the long table.