  Two-length-scale pair potentials arise ubiquitously in condensed matter
theory as effective interparticle interactions in molecular, metallic and soft
matter systems. The existence of two different bond lengths generated by the
shape of potential causes complex behavior in even one-component systems:
polymorphism in solid and liquid states, water-like anomalies, the formation of
quasicrystals and high stability against crystallization. Here we address
general properties of freezing in one-component two-length-scale systems and
argue that the formation of solid phases during cooling a liquid is essentially
determined by the radial distribution function (RDF) of the liquid. We show
that different two-length-scale systems having similar RDF freeze into the same
solid phases. In most cases, the similarity between RDFs can be expressed by
the proximity of two dimensionless effective parameters: the ratio between
effective bond lengths, $\lambda$, and the fraction of short-bonded particles
$\phi$. We validate this idea by studying the formation of different solid
phases in different two-length-scale systems. The method proposed allows
predicting effectively the formation of solid phases in both numerical
simulations and self-assembling experiments in soft matter systems with tunable
interactions.
