Noun
(inorganic chemistry) the normal allotrope of oxygen having two atoms per molecule; O₂
(inorganic chemistry, in combination) two atoms of oxygen in a molecule
Source: en.wiktionary.orgAn electron configuration with two unpaired electrons, as is found in dioxygen (see the filled * orbitals in the diagram) orbitals that are of equal energy—i. Source: Internet
Essentially all UVC (100–280 nm) is blocked by dioxygen (at 100–200 nm) or by ozone (at 200–280 nm) in the atmosphere. Source: Internet
Essentially all UVC (100–280 nm) is blocked by dioxygen (from 100–200 nm) or else by ozone (200–280 nm) in the atmosphere. Source: Internet
The shorter bands of UVC, as well as even more-energetic UV radiation produced by the Sun, are absorbed by oxygen and generate the ozone in the ozone layer when single oxygen atoms produced by UV photolysis of dioxygen react with more dioxygen. Source: Internet
The shorter portion of the UV-C band and the more energetic UV above this band causes the formation of the ozone layer, when single oxygen atoms produced by UV photolysis of dioxygen (below 240 nm) react with more dioxygen. Source: Internet
Most of the UV in the mid-range of energy is blocked by the ozone layer, which absorbs strongly in the important 200–315 nm range, the lower energy part of which is too long for ordinary dioxygen in air to absorb. Source: Internet