Across
- 3. an element in the 17th periodic table group
- 6. groups 3 - 12
- 9. group 1 electon on the outer level
- 11. electrons on the outermost area of the elctron cloud
- 12. a row on the periodic table
Down
- 1. metallic elements in the second group of the periodic table
- 2. elements with no metal properties
- 4. an element in the 18th periodic table group
- 5. a complex table showing how elements should be arranged
- 7. a class of elements characterized by specific properties like shininess and hardness
- 8. elements that contain both metal and nonmetal properties
- 10. a column on the periodic table