Photodissociation of Water (H2O)
This movie shows how an ultraviolet (UV) photon can break apart a water molecule. When the photon hits the water molecule (H2O), it adds energy to the molecule. The extra energy breaks one of the bonds between the oxygen atom and a hydrogen atom. The hydrogen atom (H) flies away from the piece that's left, which is called a hydroxyl radical (OH).
This is called photodissociation.
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Photodissociation of Molecular Nitrogen
Photodissociation of Molecular Oxygen
Photodissociation of the Hydroxyl Radical
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