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

question 47

Multiple Choice

Tin has two common allotropes at atmospheric pressure.Gray tin,or $\alpha$ -tin,which is stable below 13.2 ^$\circ$ C,is a dull gray powdery material with essentially no electrical conductivity.White tin,or $\beta$ -tin,which is stable at or above room temperature,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)White tin adopts a structure similar to graphite.

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