Across
- 1. These elements are organized on the left side of the staircase
- 3. The periodic table is organized by the number of____. It has a positive charge
- 5. This element has 47 protons
- 7. This element is in group 2 and is in dairy products like milk
- 8. These elements are organized on the right side of the staircase
- 10. Elements in the same _____ have similar properties.
Down
- 2. An element is a single ____
- 4. This element has an electron configuration of 2.8.6
- 6. This particle has a negative charge
- 8. These elements are all in group 18
- 9. This particle has no charge