Oxygen.
Virtually all of the ozone in the "Ozone Layer," which is in the stratosphere and not the troposphere where we live, is formed from oxygen atoms and oxygen molecules.
If light with a wavelength shorter than 240 nm is absorbed by a molecule of oxygen, O2, then the oxygen molecule can split into two oxygen atoms. A photon of UV light normally cleaves the oxygen molecule, but an X-ray may also cause the cleavage. Thus the first step in the formation of ozone is:
O2 + hν (<240 nm) ---> 2 O.
The reaction that produces ozone proceeds very slowly because it requires that three species collide at the same time. The reaction to form ozone is:
O. + O2 + M ---> O3 + M, where M is usually a molecule of nitrogen, but it could be a helium atom, an argon atom, or even another oxygen molecule. The formation of ozone is exothermic, meaning that energy is released, and another species, M, is necessary to absorb this excess energy or the ozone just formed or nearly formed may fly apart as a molecule of diatomic oxygen and an oxygen atom.
Some ozone is created from the right cosmic radiation and a molecule of oxygen. An alpha particle and a beta particle with the right kinetic energies may collide with O2 to form helium and a molecule of ozone. The reaction is:
α + β + O2 ---> He + O3
Little to none of the ozone created from pollution, lightning, or from other electrical discharges in the air makes its way up to the Ozone Layer. Ozone is a very powerful oxidizing agent, therefore it is a very reactive species. It readily attacks rubber, causing it to harden and crack like an old rubber band, and it does damage lung tissue. Normally our body can repair any damage faster than it is created, although the elderly, the very young, or persons that are ill are often adversely affected by what is ultimately man-made ozone.
The gas in the atmosphere is OXYGEN. The ozone layer is basically formed of this word. The complete ozone is the result of oxygen gas.
The ozone gas present in the atmosphere absorbs ultraviolet radiations. This gas is present in the form of ozone layer in the atmosphere.
A gas that forms oxygen is ozone. It is the one present in the upper atmosphere.
Ozone gas present in the stratospheric region of our atmosphere in the form of ozone layer is the one most prominent gas which is responsible for the absorption of the harmul UV radiations coming from the sun.
See "In what layer of the atmosphere do you find the ozone layer?" in the "Related questions" section below.
Ozone
The ozone gas present in the atmosphere absorbs ultraviolet radiations. This gas is present in the form of ozone layer in the atmosphere.
Ozone gas present in the stratospheric region of our atmosphere in the form of ozone layer is the one most prominent gas which is responsible for the absorption of the harmul UV radiations coming from the sun.
A gas that forms oxygen is ozone. It is the one present in the upper atmosphere.
See "In what layer of the atmosphere do you find the ozone layer?" in the "Related questions" section below.
Ozone
The gas which help in forming the earth's protective shield is ozone gas. It is present in the atmosphere as the ozone layer in the stratospheric regionof atmosphere.
The gas which shields from the harmful UV radiations is ozone. It is in the form of ozone layer in the atmosphere.
The ozone gas is not in the surface. It is in the atmosphere.
The layer containing ozone gas in the stratosphere region of the earth is known as ozone layer. Ozone is the triatomic form of oxygen.
All parts of the atmosphere contain gases that absorb UV-B and more energetic radiation. All parts of our atmosphere pass UV-A.
Ozone is a very important form of oxygen. It is its triatomic form. The ozone protects the earth from the harmful UV radiations of the sun.
Ozone is extremely rare in the Earth atmosphere.