Across
- 1. primary use is fertilizer production/ is the 4th element in the 3rd energy level with the most ionization energy/1.46 is the atomic radius
- 4. lightest solid element/152 atomic radius/0.98 electronegativity so not very electronegative
- 9. Semi-metal/3 valence electrons/ -3 charge
- 10. 3rd most abundant element in the earths crust/3 valence electrons/ charge is -3
- 12. lots of it is in oceans/22.99 is the mass,11 protons,11 electrons,12 neutrons/ the element with the least ionization energy in the 3rd energy level
Down
- 2. used to blow up balloons/non-metal/ionic radius of 32
- 3. Flows at almost 1500 degrees celsius/metalloid/5th element in the 3rd main energy level
- 5. Highly combustible/1valence electron/one proton, one electron so it's neutral except when it loses a charge
- 6. Co-factor in more than 300 enzymes/ 2 valence electrons/ is a metal
- 7. Forms the most compounds/non-metal/no ionic radius
- 8. Sliver-Gray Metallic,occurs naturally in about 30 different minerals/9.012 mass,4 protons,5 neutrons,4 electrons
- 11. Monotomic gas/38 is the atomic radius/full valence electron so its not electronegative