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:

Decentering

The cognitive ability to consider multiple aspects of a situation or to take another person's perspective, moving beyond self-centric views.

Concrete Operations

A stage in Piaget's theory of cognitive development during which children acquire the ability to think logically about concrete objects and events.

Logical Thought

The process of reasoning in a clear, structured, and consistent manner to arrive at a conclusion based on a set of premises or facts.

Cognitive Development

The process of growth and change in intellectual capabilities that occurs from infancy to adulthood.