SEARCH Articles Figures Tables Alkaline earth elements, core-valence Atomic Core and Valence Regions Basis sets core-valence correlation effects CORE AND VALENCE ELECTRONS Charge electronic, core-valence separation Core electrons valence bond theory ( Core electrons valence theory Core valence bifurcation index Core-and-valence-shell picture Core-valence correlation Core-valence correlation effects Core-valence effective potential Core-valence effects Core-valence integrals Core-valence interaction Core-valence ionization correlation Core-valence separability Core-valence separation Core-valence separation definitions Core-valence separation energy Core-valence separation theories Effective Core Potentials and Valence Basis Sets Effective core potentials valence space Electron correlation core-valence Electrons core, valence Energy frozen-core valence Gaussian Form of Effective Core Potentials and Valence Basis Sets in Periodic LCAO Calculations Nonrelativistic Effective Core Potentials and Valence Basis Sets Particle spaces core-valence correlation Politzer-Parr core valence separation Relativistic Effective Core Potentials and Valence Basis Sets The Core and Valence Hole Spectra of Ethylene The Core and Valence Level Spectrum of Acetylene The Core-Valence Separation in Real Space The Method of Explicit Core-Valence Orthogonality Valence and core photoelectron Valence and core photoelectron spectroscopies Valence orbitals, “core-like