单词 | septivalent |
释义 | septivalent/ˌsɛptɪˈveɪl(ə)nt /adjective Chemistry Another term for heptavalent.Vanadium oxides that are in the higher oxidation state, e.g. pentavalent and septavalent oxides of vanadium and complexes thereof have melting points from about 1,200° to about 1,300° F....
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