Which Element Has the Longest Half-Life

question 81

Multiple Choice

Which element has the longest half-life?

• A) rubidium-87
• B) lead-214
• C) uranium-238
• D) carbon-14
• E) potassium-40

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Definitions:

Anticommunist Crusade

Political and social movements, especially during the Cold War, aimed at combatting and eradicating communist ideologies and influences.

Federal Government

The national government of the United States, which is responsible for areas like defense, foreign policy, and interstate commerce, distinct from state or local governments.

Loyalty Review System

A system implemented, especially during the Cold War in the United States, to assess the loyalty of government employees and others to the country.

Homosexuals

Refers to individuals who are romantically or sexually attracted to people of the same sex.