If 12% of a Certain Radioisotope Decays in 5

question 118

Multiple Choice

If 12% of a certain radioisotope decays in 5.2 years, what is the half-life of this isotope

• A) 0.59 yr
• B) 1.7 yr
• C) 22 yr
• D) 28 yr
• E) 32 yr

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Definitions:

Emotionally Stable

The characteristic of being able to remain calm, composed, and untroubled by stress or change.

Personality

The combination of emotional, attitudinal, and behavioral response patterns of an individual.

Limit Choices

Refers to reducing the number of options available to make a decision easier or to focus on more viable alternatives.

Constant

Something that remains unchanged or stable over a period of time.