transition element

English

Noun

transition element (plural transition elements)

  1. (chemistry) Any element in the d block of the periodic table (i.e. groups 3 to 12 inclusive).
    Synonym: transition metal
  2. (chemistry, dated) The same, but excluding the group 12 elements (i.e. groups 3 to 11 inclusive).
  3. (chemistry, dated) Any of the group of metallic elements that have an incomplete inner (d) electron shell, having multiple valencies and forming coloured compounds and stable complex ions.

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