Which of the Following Best Describes the Lanthanide Contraction

question 2

Multiple Choice

Which of the following best describes the lanthanide contraction?

• A) f-orbitals are more directional than d-orbitals and therefore less effective at screening nuclear charge
• B) f-orbitals are more diffuse than d-orbitals and therefore less effective at screening nuclear charge
• C) the increase in atomic and ionic radii as one goes from left to right across the lanthanides
• D) A and C
• E) B and C

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Definitions:

Substitution Effect

The change in demand for a good that results from a change in its price, making consumers more likely to purchase more of a less expensive alternative or less of a more expensive one.

Demand Curves

Graphs showing the relationship between the price of a good and the quantity demanded by consumers, typically downward-sloping.

Marginal Utility Data

Information regarding the additional satisfaction or use received by consuming one more unit of a good or service.

Prices

The monetary value expected, necessary, or allocated for the purchase of something.