Practice question

MCQ

Question

Which complex has a primary valence of 3 as per Werner’s theory?

Choose one · Correct answer highlighted

[Cr(H₂O)6]Cl₃ Correct [Ni(NH₃)4]2+ [CuCl₄]2− [Fe(H₂O)6]2+

Primary valence is the oxidation state. In [Cr(H₂O)6]Cl₃, Cr is +3 (balancing 3 Cl−), aligning with Werner’s theory.

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