Why the bond distance in iodine molecule shorter in gaseous phase than is solid phase?

Answer 1

i think in the gaseous phase there are other forces acting atoms of iodine like inter moleculer forces due to wich bond distance increases.

in case of gasous state there are no other force acting on the molecule of iodine axcept electrostatic force between two atoms of iodine . so in case of gase elctrostatic force is more than in the case of solid..

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Answer 2

In the gaseous phase, the iodine molecules have higher kinetic energy and move more freely, causing them to be further apart and resulting in a shorter bond distance. In the solid phase, the molecules are closer together and have lower kinetic energy, leading to a longer bond distance. Additionally, intermolecular forces in the solid phase play a role in the distance between the molecules.