Two Complex Ions Containing Ni Are [Ni(NH₃)₆]²⁺, Which Is Blue

question 92

Multiple Choice

Two complex ions containing Ni are [Ni(NH₃) ₆]²⁺, which is blue, and [Ni(en) ₃]²⁺, which is purple. Which one of these statements is true

• A) The crystal field splitting energy (D) is greater for [Ni(NH₃)₆]²⁺ than for [Ni(en)₃]²⁺.
• B) [Ni(en)₃]²⁺ absorbs light in the violet region of the spectrum.
• C) Both complex ions are diamagnetic.
• D) The energy of the photon absorbed by [Ni(en)₃]²⁺ is greater than that absorbed by [Ni(NH₃)₆]²⁺.
• E) The wavelength of the light absorbed by [Ni(en)₃]²⁺ is greater than the wavelength absorbed by [Ni(NH₃)₆]²⁺.

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