CoF₆^3- Absorbs Light in the Red Region of the Spectrum

question 49

Multiple Choice

CoF₆^3- absorbs light in the red region of the spectrum, while Co(NH₃) ₆³⁺ absorbs light in the blue region of the spectrum. This difference means that ________

• A) the splitting of the d orbitals of the two complexes is nearly identical.
• B) the value of the crystal field splitting is very small for both complexes.
• C) the crystal field splitting is larger for the ammonia complex than for the fluoride complex.
• D) the d_z² and d_x² - _y² orbitals are higher in energy than the d_xy, d_xz, and d_yz orbitals in CoF₆^3- and just the opposite splitting order for Co(NH₃)₆³⁺.
• E) the d_z² and d_x² - _y² orbitals are lower in energy than the d_xy, d_xz, and d_yz orbitals in CoF₆^3- and just the opposite splitting order for Co(NH₃)₆³⁺.

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Definitions:

Standard Deviation

Standard deviation is a statistical measure that quantifies the amount of variability or dispersion in a set of data values, indicating how much the individual data points differ from the mean of the data set.

Distribution

The arrangement of values of a variable showing their observed or theoretical frequency of occurrence.

Variation

The occurrence of differences or changes in the characteristics of organisms or objects within a population or set.

Extreme Scores

Data points in a set that are significantly higher or lower than the majority.