When a Nucleus Undergoes Radioactive Decay, Its New Mass Number

question 25

Multiple Choice

When a nucleus undergoes radioactive decay, its new mass number is

• A) always less than its original mass number.
• B) always more than its original mass number.
• C) never less than its original mass number.
• D) never more than its original mass number.

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Definitions:

Psychiatry

A branch of medicine focused on the diagnosis, treatment, and prevention of mental, emotional, and behavioral disorders.

Psychology

The scientific study of the human mind and its functions, especially those affecting behavior.

Sigmund Freud

An Austrian neurologist and the founder of psychoanalysis, a method for treating psychopathology through dialogue between a patient and a psychoanalyst.

Operant Conditioning

A training approach that modifies the strength of a behavior through the application of reinforcement or punishment.