Solution:
The word ZMK is an abbreviation for the concept Z erase m olecular raft K. Note that, as the word says, it's about the forces between the molecules, not the forces within a molecule. [translation unavailable] stronger these powers between two molecules is, the more heavier can a of the individual molecule the community abandoned (z.B. Thus vapour).
And otherwise can said are, [translation unavailable] weaker the ZMKs are, and so on small would be z.B. The melting point or boiling point. The ZMK's are practically, to quality a coarse assessment the miscibilities, the Court of Auditors, features of the fluid and so on. Of molecules to make to can.