Relating to or containing both chlorine and palladium, especially in chemical compounds where palladium is in a higher oxidation state.
From chloro- plus palladic (containing palladium in the +4 oxidation state, derived from palladium). Terminology refined in early 20th-century coordination chemistry.
The suffix -ic versus -ous in palladium chemistry actually tells you the oxidation state—palladic means +4, while palladous means +2—so chemists can write one word and instantly tell another chemist exactly how many electrons the metal has donated.
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