There Are Three Radioactive Series: the Thorium Series, Which Begins

question 12

Multiple Choice

There are three radioactive series: the thorium series, which begins with 232Th, the actinium series which starts with 235U and the uranium series which starts with what isotope?

• A) 223Fr
• B) 238U
• C) 221Rn
• D) 214Pb
• E) 232Th

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Definitions:

Credible Threat

A declaration or action by a party that it will follow through with a particular response if certain conditions are met, believed to be feasible by the other party.

Warranty

A guarantee, typically made by a manufacturer or seller, to repair or replace a product within a specified period if it is found to be faulty.

Dominant Strategy

A strategy that always provides greater utility to a player, regardless of the opponent's strategy.

Nash Equilibria

Nash Equilibria refer to a situation in a game where no player can benefit by changing strategies if other players keep theirs unchanged.