Item:Q3343: Difference between revisions
Created a new Item: period, row in the periodic table: repetition of properties in chemical elements when ordered by atomic number: |
Created claim: subclass of (P1): class (Q2169) |
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| Property / subclass of | |||
| Property / subclass of: class / rank | |||
Normal rank | |||
| Property / subclass of: class / qualifier | |||