An Isotope's Half-Life Is

question 77

Multiple Choice

An isotope's half-life is

• A) the amount of time that the isotope has been on Earth divided by two.
• B) the length of time it takes for half of a sample of atoms to decay.
• C) the number of protons and neutrons in an atom divided by two.
• D) the ratio of unstable atoms to stable atoms in half a gram of sample.

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Definitions:

IQ Scores

Numerical scores derived from standardized tests designed to measure human intelligence and cognitive abilities relative to an age group.

IQ Test

A standardized assessment tool used to measure a person's intelligence quotient, which is an indicator of their cognitive abilities relative to the population.

Age Group

A category of people of similar ages, often used for statistical, marketing, or planning purposes.

Heritability

The proportion of variation among individuals in a population that can be attributed to genetic factors.