If an Element Has 18 Protons and 20 Neutrons and 18

question 56

Multiple Choice

If an element has 18 protons and 20 neutrons and 18 electrons,which expression correctly identifies the element?

• A)argon-38
• B)argon-18
• C)argon-20
• D)calcium-38
• E)calcium-20

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Definitions:

Negative Reinforcement

A behavioral principle where the removal of an aversive stimulus strengthens a behavior.

Noxious Stimulus

An unpleasant or harmful stimulus that is likely to cause discomfort or damage.

Maladaptive Response

An ineffective or harmful response to environmental stressors, typically preventing healthy adjustment.

Problem Behaviors

Actions or patterns of behavior that are socially unacceptable or harmful to oneself or others.