If UV-C helps create ozone layer and converts Oxygen to O-3. Then why isn't it called ionizing radiation?

If UV-C helps create ozone layer and converts Oxygen to O-3. Then why isn't it called ionizing radiation?
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answer:In general, Ionizing radiation uses alpha, beta or gamma particles In general , Non ionizing radiation is electomagnetic waves like radio waves, light, thermal UV-C is considered right at the borderline between the two. Visible light is 380 -780 nm. Above that is infrared, microwaves etc. Non ionizing UV is around 10 to 380 Below UV is the ionizing radiation Some people define the line at the vacuum UV range 100–180 nm, since below that wavelength, UV can only travel in a vacuum. UV-C is 254nm. Some people call that the line because of its dangerous properties. We don’t because it still handles and operates like visible light. The optics are similar except made of different materials, usually quartz. We consider anything less than 100 nm “ionizing”. The EPA has a handy chart discussing this.
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