An Isotope of a Given Element Has a Mass Number

question 6

Multiple Choice

An isotope of a given element has a mass number equal to twice the atomic number.  This neutral isotope contains twelve electrons.  This isotope is _____ .

• A)magnesium-12.
• B)magnesium-24.
• C)chromium-24.
• D)chromium-12.

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Definitions:

Cognitive Psychology

A branch of psychology that explores internal mental processes such as problem solving, memory, learning, and language.

Behaviorism

A theoretical orientation based on the premise that scientific psychology should study only observable behavior, emphasizing the effects of environment on behavior.

Logical Evaluation

The process of examining statements, hypotheses, or arguments critically and systematically using reasoning and logic to assess their validity or soundness.

Reason

The mental capacity of an individual to apply logic in analyzing and solving problems, and in making decisions or forming judgments.