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Electronic structures for Mg, Zn and Cd have been completed using the linear muffin tin orbital method. The results include plots of band structure, Fermi-surfaces in extended and reduced zone schemes and density-of-states functions. Generally, good agreement with some other ab initio band results as well as with experiment is found for the Fermi surface dimensions except for an absence of needles in Zn. For the d bands, it is found that in Zn they are localised above the conduction-band minimum, while in Cd they lie only partially above the conduction band.

The momentum dependence of an effective enhancement factor is investigated both for itinerant and core electrons. The local density approach is applied to describe electron-positron interaction.The possibility of over-enhancement of HMC is predicted for the first time. The results obtained for core electrons are consistent with experimental data. It is shown that for some momenta electron-positron attraction can give not only enhancement, but also damping of the probability annihilation.