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The arrangement of particles of an unkno...

The arrangement of particles of an unknown substance at the same pressure at two different temperatures is shown in the diagrams:

Which of the following substances could the diagrams represent?

Text Solution

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The correct Answer is:
C
The given diagrams represent the substance R. The melting point of R is `-166^@C`, thus, at `-140^@C` it will be in liquid state as represented by first figure. The substance R boils at `-103^@C`, thus, at `-100^@C` it will be a gas as shown in the second figure.
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