When an Unstable Nucleus Decays by Emitting an Alpha Particle,the

question 52

Multiple Choice

When an unstable nucleus decays by emitting an alpha particle,the atomic mass number A of the nucleus

• A)increases by 4.
• B)increases by 2.
• C)decreases by 2.
• D)decreases by 4.
• E)remains unchanged.

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Definitions:

Expectancy

A belief or anticipation about the likelihood of an event happening, often influencing behavior and decision-making.

US Occur

This appears to be a fragment or unclear phrase and does not represent a recognizable key term by itself.

Rescorla and Wagner

Psychologists who developed a model explaining how the strength of a conditioned response in classical conditioning depends on the predictability of the unconditioned stimulus.

Cognitive Processes

Mental activities involved in acquiring, storing, and utilizing knowledge.