# Resolve RDF Terms

### Recommended prefix

quantitykind:

lang:en
For a uni-univalent ionic crystal of specified structure, the binding energy $$V_b$$ per pair of ions is $$V_b = \alpha\frac{e^2}{4\pi \varepsilon_0 a}$$, where $$e$$ is the elementary charge, $$\varepsilon_0$$ is the electric constant, and $$a$$ is the lattice constant which should be specified.
$$\alpha$$