Across
- 2. Rare earth metals usually shown in a separate row below the main table
- 5. Metals – Elements in the center of the periodic table, often used in industry
- 6. Russian chemist who organized the first widely recognized periodic table
Down
- 1. Element 118, the heaviest confirmed element on the periodic table
- 3. Row of radioactive elements below the main table
- 4. The repeating pattern of chemical properties that Mendeleev observed