Which is a complex ion? A)CrCl₃ B)CrO₄^2- C)[Cr(H₂O)₆]³⁺ D)Cr₂O₇^2-

Name: Which is a complex ion? A)CrCl 3 B)CrO 4 2- C)[Cr(H 2 O) 6 ] 3+ D)Cr 2 O 7 2-
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Question

Quizplus · Accepted Answer

Complex ions are formed when metal atoms or ions combine with ligands. In option C, the ligands are H₂O and ₆, which are covalently attached to the central Cr3+ ion. Therefore, option C is a complex ion. The other options do not have ligands or covalent bonds, and hence are not complex ions.

Which Is a Complex Ion