Atomic numbers 4 Atoms 4 Basis sets 4 Bromine 4 Chemical compounds 4 Chemical shift 4 Chlorine 4 Computing Methodologies 4 Coulomb potential 4 Electric fields 4 Exchange-correlations 4 Experimental data 4 Functionals 4 Gaussians 4 Iodine 4 Linear response 4 Magnetic Resonance Spectroscopy 4 Magnetic shielding 4 Mercury (metal) 4 Mercury Compounds 4 Mercury Isotopes NMR shielding 4 Nuclear magnetic resonance shielding 4 Point nuclei 4 Quantum Theory 4 Relativistic effects 4 Resonance 4 Shielding constants 4 Small components 4 Spin densities 4