Atmospheric ozone plays a protective role by absorbing high‑energy, damaging UV radiation, including UV‑A (320–400 nm) , UV‑B (280–320 nm), and UV‑C (200–280 nm). Unfortunately, human‑caused pollution has eroded the ozone layer in the stratosphere, allowing a greater amount of ultraviolet radiation to reach the Earth's surface. The damaging effects of the radiation are related to its photon energy. Arrange the regions of UV radiation from lowest to highest photon energy. UV‑B UV‑C UV‑A Lowest photon energy: ______________ Middle photon energy: _______________ Highest photon energy: ______________ Which region of the UV spectrum has the greatest frequency? 1. UV‑C 2. All three regions have the same frequency. 3. UV‑A 4. UV‑B
Electronic Transitions and Spectroscopy
The term “electronic” connotes electron, and the term “transition” implies transformation. In a molecule, the electrons move from a lower to a higher energy state due to excitation. The two energy states, the ground state and the excited state are the lowest and the highest energy states, respectively. An energy change is observed with this transition, which depicts the various data related to the molecule.
Photoelectron Spectroscopy
Photoelectron spectroscopy (PES) is a part of experimental chemistry. It is a technique used in laboratories that involves projecting intense beams of radiation on a sample element. In response, the element ejects electrons for which the relative energies are measured.
Atmospheric ozone plays a protective role by absorbing high‑energy, damaging UV radiation, including UV‑A (320–400 nm) , UV‑B (280–320 nm), and UV‑C (200–280 nm). Unfortunately, human‑caused pollution has eroded the ozone layer in the stratosphere, allowing a greater amount of ultraviolet radiation to reach the Earth's surface. The damaging effects of the radiation are related to its photon energy.
Arrange the regions of UV radiation from lowest to highest photon energy.
UV‑B
UV‑C
UV‑A
Lowest photon energy: ______________
Middle photon energy: _______________
Highest photon energy: ______________
Which region of the UV spectrum has the greatest frequency?
1. UV‑C
2. All three regions have the same frequency.
3. UV‑A
4. UV‑B
Trending now
This is a popular solution!
Step by step
Solved in 7 steps with 6 images
