Ozone: Radiation Flashcards
What is the order of the EM spectrum in Increasing Frequency ( energy )
Radio Micro IR Visible UV X-Ray Gamma Ray
What is the order of the EM spectrum in Increasing Wavelength
Gamma X- Ray UV Visible IR Micro Radio
Which EM wave has the highest frequency ( energy )
Gamma
Which EM wave has the longest wavelength
Radio
Which EM wave has the lowest frequency ( energy )
Radio
Which EM wave has the shortest wavelength
Gamma
What is the equation for speed of light, c
C= v lamda
Speed of light = frequency x wavelength
The two equation for energy
- E = hv ( energy, J = planks constant x frequency )
2. E=hc / lamda ( planks constant x speed of light / wavelength )
What happens when a molecule absorbs IR radiation
- IR causes changes in the level of vibration energy of bonds
- Bonds are not broken
- IR is used in analysis of compounds
What happens when molecules absorb Visible & UV radiation
- Visible & UV cause changes in the level of electronic energy ( effect what the electron can absorb )
What happens to electrons at lower absorbed energies of radiation
Electrons may be excited to a higher energy level the fall back to a lower energy level
What happens to electrons at higher absorbed energies of radiation
- bonding electrons separate
- covalent bonds break by homolytic fission
- radicals are formed
Definition of heterolytic fission
Shared electrons go to one atom when bond is broken, forms ions
Eg. In polar molecules
Definition of homolytic fission
Electrons are shared equally when bond is broken.
Leads to radical formation
