Which of the Following Statements About Lanthanides and Actinides Is

question 4

Multiple Choice

Which of the following statements about lanthanides and actinides is incorrect?

• A)The +3 oxidation state is the most common for both lanthanides and actinides.
• B)All of the actinide elements are radioactive.
• C)All of the lanthanide elements occur in nature.
• D)All of the actinide elements are artificially made.
• E)Due to similarities in their chemical properties, the actinide elements are not easily separated from each other.

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Definitions:

Therapeutic Situation

An environment or setting designed for the purpose of providing psychological treatment and support, often facilitating communication and emotional healing.

Bias

A tendency to lean in a certain direction, often to the detriment of an open-minded assessment, stemming from personal judgement, experience, or preference.

Confirmation Bias

The tendency to search for, interpret, favor, and recall information in a way that confirms one's preexisting beliefs or hypotheses.

Availability Heuristic

A cognitive shortcut that relies on immediate examples that come to a person’s mind when evaluating a specific topic, concept, method, or decision.