Which Are Closer Together: the Two Nuclei Within Potassium Fluoride,KF,or

Multiple Choice

Which are closer together: the two nuclei within potassium fluoride,KF,or the two nuclei within molecular fluorine, F₂ ?

A) KF
B) F₂
C) Both are the same.Any atom bonded to F will have the same inter-nuclear separation.
D) It makes little sense to compare two molecules which exist in different physical states.KF is a solid while F₂