Fluorine is a gas and iodine is a solid, yet all halogens are non-polar and would interact with London dispersion forces. This is a result of

the molecules of each substance attract each other through dispersion (London) intermolecular force.whether a substance is solid, liquid or gas depends on the balance between the kinetic energies of the molecules and their intermolecular attractions.

thank you.

2b2t

explanation:

2b2t

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.