Answered

For a molecular substance such as elemental iodine (I₂), when are intermolecular forces mostly absent?

A. In the condensed phases (liquid and solid)
B. In the liquid phase
C. In the solid phase
D. In the gas phase



Answer :

GinnyAnswer

Final answer:

Intermolecular forces are mostly absent in the gas phase for molecular substances like elemental iodine due to the molecules being far apart, resulting in weak intermolecular forces until condensation.


Explanation:

Intermolecular forces are mostly absent in the gas phase for molecular substances like elemental iodine. This is because in the gas phase, molecules are far apart, and intermolecular forces are nearly nonexistent until the substance condenses into a liquid or solid state. For example, elemental fluorine and chlorine are gases due to weak intermolecular forces, whereas bromine is a liquid, and iodine is a solid because of stronger forces.


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