**Carries electromagnetic radiation in the infrared and visible parts of ozone < 300 nm 300 nm > 300 nm **Ozone is toxic when concentrated 4 ppm 1 ppm 2 ppm **The oxidative state of N2H6 3 2+ 2- **The level of symmetry in H2O αν od 2ον **Reaction of ammonia with iron in the presence of copper as a catalyst.? HF and NF3 NF3 and NH4 NF3 and NH4F