Across
- 2. Scientist credited for determining the standard relative atomic masses known in his day.
- 4. These 2 elements are the exception to the atomic radius pattern when moving down a group. Aluminum and ________.
- 6. Atoms are measured in units called ______.
- 11. Hg and Br are _______ at room temp.
- 13. The most electronegative element.
- 15. Mendeleev left spaces in his table because he believed the spaces would be filled by ____ elements.
- 16. An Ion w/ a pos. charge.
- 18. An ion w/ a neg. charge.
- 20. The electrons in the outermost shell of an atom.
- 21. When moving down a group ionic radii ________.
Down
- 1. When moving up a group, atomic radii _____in size.
- 3. Metals are able to be drawn into a long wires, are said to be _________.
- 5. First to publish the Periodic Table.
- 7. Scientist who used atomic numbers to reorganize the periodic table.
- 8. The ability of metals to be hammered into sheets.
- 9. Noble gases are very non-_________.
- 10. Another name for metalloids.
- 12. Group of gases added to the table after Mendeleev's time.
- 14. The most reactive gases on the table are the _______.
- 17. Neg. charged ions are ______ than their parent atom.
- 19. Group 1 metals, except for hydrogen, are called ________ metals.