A Radioisotope Decays, Producing an Alpha Particle and Th-234

question 57

Multiple Choice

A radioisotope decays, producing an alpha particle and Th-234. The original radioisotope must have been an atom of ________.

• A) Pa
• B) Bi
• C) U
• D) Ra
• E) Rb

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Definitions:

Annual Profits

The net earnings of a company over a one-year period after all expenses have been deducted from its total revenue.

Distribution

In statistics, the way in which values of a variable or a set of variables spread out across a data set or population.

Government Workers

Individuals employed by federal, state, local, or international government agencies.

Weekly Salaries

The amount of money earned by an employee for work performed over the course of a week.