# Relative magnitudes of intermolecular forces from phase diagrams

Is it possible to say whether or not a system A or B has stronger intermolecular forces from a phase diagram according to which:

1. The $T_{\text{b}}$ of A is lower than the $T_{\text{b}}$ of B.
2. The $T_{\text{melting}}$ of A is higher than the $T_{\text{m}}$ of B.
3. The triple points of A and B are the same.

Or is it not possible to compare A and B's intermolecular forces from a phase diagram?

I was sure that B has stronger intermolecular forces, as its boiling point is higher than for A at the same pressure.