Across
- 1. largest element
- 3. form of nuclear technology
- 6. number of columns on the periodic table
- 8. first element in the periodic table
- 10. opposite of metal
- 11. prefix for one used in element names
Down
- 2. the most common gas in the atmosphere
- 3. element with 8 valence electrons
- 4. negatively charged ion
- 5. popular website for budget purchases
- 7. number of hydrogen atoms in a water molecule
- 9. number of valence electrons in chlorine