Abstract
For pt.I see ibid., vol.14, no.3, p.639 (1984). The principal trends in the calculated paramagnetic ground-state charge densities, lattice parameters and bulk moduli of the uranium chalcogenides and pnictides are analysed in an approximation that neglects spin-orbit coupling. The increase in the size of the anion across a pnictide or chalcogenide series is responsible for a regular increase in the lattice parameter and a corresponding decrease in the bulk modulus. The decrease in the fractional volume occupied by the uranium atom leads to a narrowing of the uranium d-f band structure and a concomitant increase in the density of states at the Fermi level.