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

question 75

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 (\(\Delta\))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⁺.

---

Definitions:

Phase Angle

A measurement, often in degrees or radians, indicating the difference in phase between two waveforms.

Parallel Circuit

An electrical circuit configuration where components are connected alongside each other, leading to the same voltage across all components but different current through each.

Inductive Reactance

The opposition that inductors present to current change in AC circuits, measured in Ohms.

Power Factor

A dimensionless number between -1 and 1 that represents the phase difference between the voltage and current in an alternating current (AC) electrical circuit.