Across
- 2. Nonmetal in Group 4
- 4. A unit or quantum of light
- 5. 1s^2 2s^2 2p^6 3s^1
- 7. A region in an atom where there is a high probability of finding electrons
- 9. 1S^2 2S^2 2P^4
- 11. Mendeleev Who was the first person to design a way to organize elements?
Down
- 1. What determines the chemical properties of an atom?
- 3. A vertical column on the periodic table
- 4. A horizontal row of elements in the periodic table
- 6. Group 4; Period 12
- 8. Number How is the periodic table organize elements by?
- 10. Is there an exact location for an electron?