Tin Has Two Common Allotropes at Atmospheric Pressure $\alpha$ -Tin, Is Stable Below a Temperature of 13

question 145

Multiple Choice

Tin has two common allotropes at atmospheric pressure.Gray tin, or $\alpha$ -tin, is stable below a temperature of 13.2 $\degree$ C, and is a dull gray powder with essentially no electrical conductivity.White tin, or $\beta$ -tin, is stable at or above room temperature, and is malleable, silvery-white, and conductive in three dimensions.Which of the following statements regarding these allotropes could be correct?

• A)Gray tin adopts a structure similar to diamond.
• B)Gray tin adopts a structure similar to graphite.
• C)White tin is composed of clusters similar to fullerenes.
• D)White tin adopts a structure similar to diamond.
• E)None of these are correct.

Identify different types of depression.

Describe traditional classifications of mental disorders and understand which types are more debilitating.

Recognize personality disorders and their general characteristics.

Understand different perspectives on mental disorders and the implications of labeling behaviors as disorders.

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Definitions:

Repetitive Behaviors

Actions that are performed again and again, often a symptom of neurological disorders.

Inner Speech

Mental dialogue or the silent conversation one has with oneself, which plays a role in thinking and decision-making.

Lev Vygotsky

A Russian psychologist known for his work on cognitive development, particularly the social-cultural theory which emphasizes the role of social interaction in learning.

Higher Levels

A term that may refer to advanced stages or degrees of understanding, consciousness, or development in various contexts.