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The most common oxidation state for ions of the transition elements is
Red Cross
An international humanitarian organization dedicated to protecting the lives and dignity of victims of armed conflict and other crises.
Weber's Law
A principle relating to perception that states the smallest change in a stimulus that can be detected is a constant proportion of the stimulus level.
Illumination
The deliberate use of light to achieve a practical or aesthetic effect.
Brightness
The perception of how light or dark a color appears; a quality of visual experience that varies with lighting conditions.
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