The Isotope $\begin{array} { c } 235 \\92\end{array}$ U Is Radioactive and Decays in a Series To

question 113

Multiple Choice

The isotope $\begin{array} { c } 235 \\92\end{array}$ U is radioactive and decays in a series to $\begin{array} { r } 227 \\90\end{array}$ Th. In this series, the particles ejected from the nucleus are

• A)one alpha particle and three beta-minus particles.
• B)three alpha particles and one beta-minus particle.
• C)one alpha particle and four beta-minus particles.
• D)four alpha particle and one beta-minus particle.
• E)two alpha particles and two beta-minus particles.

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Definitions:

Duty

What one ought to do, whether by virtue of his or her place or position in society (in Plato or Aristotle, for example) or by virtue of rational moral principles (as in Kant).

Obligation

A duty or commitment that one is bound to by law, promise, moral principles, or social custom.

Social Contract

A theory in political philosophy suggesting that the legitimacy of authority comes from an implicit agreement between the governing and the governed.

Legitimacy

The general belief that a rule, institution, or leader has the right to govern or dictate.