Two Well-Known Complex Ions Containing Ni Are [Ni(H₂O)₆]²⁺, Which Is

question 28

Multiple Choice

Two well-known complex ions containing Ni are [Ni(H₂O) ₆]²⁺, which is green, and [Ni(en) ₃]²⁺, which is purple. Which one of these statements is true?

• A) The crystal field splitting energy (Δ) is greater for [Ni(en)₃]²⁺ than for [Ni(H₂O)₆]²⁺.
• B) [Ni(en)₃]²⁺ absorbs energy in the red region of the spectrum.
• C) Both complex ions are diamagnetic.
• D) [Ni(H₂O)₆]²⁺ transmits light with wavelengths of approximately 650-700 nm.
• E) The green complex absorbs green light.

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