| Abundances of the elements | neptunium |
| Abundance in carbonaceous meteorites (by weight) | neptunium |
| Abundance in carbonaceous meteorites (by atoms) | neptunium |
| Abundance in Earth's crust (by weight) | neptunium |
| Abundance in Earth's crust (by atoms) | neptunium |
| Abundance in iron meteorites (by weight) | neptunium |
| Abundance in iron meteorites (by atoms) | neptunium |
| Abundance in oceans (by weight) | neptunium |
| Abundance in oceans (by atoms) | neptunium |
| Abundance in stream water (by weight) | neptunium |
| Abundance in stream water (by atoms) | neptunium |
| Abundance in the sun (by weight) | neptunium |
| Abundance in the sun (by atoms) | neptunium |
| Abundance in the universe (by weight) | neptunium |
| Abundance in the universe (by atoms) | neptunium |
| Abundances in humans (by weight) | neptunium |
| Abundances in humans (by atoms) | neptunium |
| Atomic radii (Clementi) | neptunium |
| Atomc radii (calculated) | neptunium |
| Atomic radius (empirical) | neptunium |
| Atomic number | neptunium |
| Atomic spectra | neptunium |
| Biology | neptunium |
| Block in periodic table | neptunium |
| Boiling point | neptunium |
| Boiling point of highest fluoride | neptunium |
| Boiling point of hydride | neptunium |
| Bond enthalpy (single bond) | neptunium |
| Bond enthalpy of diatomic M-Al molecules | neptunium |
| Bond enthalpy of diatomic M-Ar molecules | neptunium |
| Bond enthalpy of diatomic M-As molecules | neptunium |
| Bond enthalpy of diatomic M-B molecules | neptunium |
| Bond enthalpy of diatomic M-Ba molecules | neptunium |
| Bond enthalpy of diatomic M-Be molecules | neptunium |
| Bond enthalpy of diatomic M-Bi molecules | neptunium |
| Bond enthalpy of diatomic M-Br molecules | neptunium |
| Bond enthalpy of diatomic M-C molecules | neptunium |
| Bond enthalpy of diatomic M-Ca molecules | neptunium |
| Bond enthalpy of diatomic M-Cl molecules | neptunium |
| Bond enthalpy of diatomic M-Cs molecules | neptunium |
| Bond enthalpy of diatomic M-F molecules | neptunium |
| Bond enthalpy of diatomic M-Fr molecules | neptunium |
| Bond enthalpy of diatomic M-Ga molecules | neptunium |
| Bond enthalpy of diatomic M-Ge molecules | neptunium |
| Bond enthalpy of diatomic M-H molecules | neptunium |
| Bond enthalpy of diatomic M-He molecules | neptunium |
| Bond enthalpy of diatomic M-I molecules | neptunium |
| Bond enthalpy of diatomic M-In molecules | neptunium |
| Bond enthalpy of diatomic M-K molecules | neptunium |
| Bond enthalpy of diatomic M-Kr molecules | neptunium |
| Bond enthalpy of diatomic M-Li molecules | neptunium |
| Bond enthalpy of diatomic M-Mg molecules | neptunium |
| Bond enthalpy of diatomic M-N molecules | neptunium |
| Bond enthalpy of diatomic M-Na molecules | neptunium |
| Bond enthalpy of diatomic M-Ne molecules | neptunium |
| Bond enthalpy of diatomic M-O molecules | neptunium |
| Bond enthalpy of diatomic M-P molecules | neptunium |
| Bond enthalpy of diatomic M-Pb molecules | neptunium |
| Bond enthalpy of diatomic M-Ra molecules | neptunium |
| Bond enthalpy of diatomic M-Rb molecules | neptunium |
| Bond enthalpy of diatomic M-Rn molecules | neptunium |
| Bond enthalpy of diatomic M-S molecules | neptunium |
| Bond enthalpy of diatomic M-Sb molecules | neptunium |
| Bond enthalpy of diatomic M-Se molecules | neptunium |
| Bond enthalpy of diatomic M-Si molecules | neptunium |
| Bond enthalpy of diatomic M-Sn molecules | neptunium |
| Bond enthalpy of diatomic M-Sr molecules | neptunium |
| Bond enthalpy of diatomic M-Te molecules | neptunium |
| Bond enthalpy of diatomic M-Tl molecules | neptunium |
| Bond enthalpy of diatomic M-Xe molecules | neptunium |
| Bond enthalpy of diatomic molecules | neptunium |
| Bond enthalpy of homodinuclear molecules | neptunium |
| Bond length in element | neptunium |
| Bulk modulus | neptunium |
| CAS Registry number | neptunium |
| Chemistry | neptunium |
| Classification | neptunium |
| Colour | neptunium |
| Common oxidation numbers | neptunium |
| compounds | neptunium |
| contents | neptunium |
| Covalent radius | neptunium |
| covalent radii revisited (2008 values) | neptunium |
| Covalent radii (molecular single bond) | neptunium |
| Covalent radii (molecular double bond) | neptunium |
| Covalent radii (molecular triple bond) | neptunium |
| Critical temperature | neptunium |
| Crystal structure | neptunium |
| Density of solid | neptunium |
| Description | neptunium |
| Discovery | neptunium |
| Discovery | neptunium |
| Discovery | neptunium |
| Effective nuclear charge (Clementi) | neptunium |
| Effective nuclear charge (Clementi) - 1s | neptunium |
| Effective nuclear charge (Clementi) - 2p | neptunium |
| Effective nuclear charge (Clementi) - 2s | neptunium |
| Effective nuclear charge (Clementi) - 3d | neptunium |
| Effective nuclear charge (Clementi) - 3p | neptunium |
| Effective nuclear charge (Clementi) - 3s | neptunium |
| Effective nuclear charge (Clementi) - 4d | neptunium |
| Effective nuclear charge (Clementi) - 4f | neptunium |
| Effective nuclear charge (Clementi) - 4p | neptunium |
| Effective nuclear charge (Clementi) - 4s | neptunium |
| Effective nuclear charge (Clementi) - 5d | neptunium |
| Effective nuclear charge (Clementi) - 5p | neptunium |
| Effective nuclear charge (Clementi) - 5s | neptunium |
| Effective nuclear charge (Clementi) - 6p | neptunium |
| Effective nuclear charge (Clementi) - 6s | neptunium |
| Electrical resistivity | neptunium |
| Electron affinity | neptunium |
| Electron binding energies | neptunium |
| Electron binding energies (K) | neptunium |
| Electron binding energies (L-I) | neptunium |
| Electron binding energies (L-II) | neptunium |
| Electron binding energies (L-III) | neptunium |
| Electron binding energies (M-I) | neptunium |
| Electron binding energies (M-II) | neptunium |
| Electron binding energies (M-III) | neptunium |
| Electron binding energies (M-IV) | neptunium |
| Electron binding energies (M-V) | neptunium |
| Electron binding energies (N-I) | neptunium |
| Electron binding energies (N-II) | neptunium |
| Electron binding energies (N-III) | neptunium |
| Electron binding energies (N-IV) | neptunium |
| Electron binding energies (N-V) | neptunium |
| Electron binding energies (N-VI) | neptunium |
| Electron binding energies (N-VII) | neptunium |
| Electron binding energies (O-I) | neptunium |
| Electron binding energies (O-II) | neptunium |
| Electron binding energies (O-III) | neptunium |
| Electron binding energies (O-IV) | neptunium |
| Electron binding energies (O-V) | neptunium |
| Electron binding energies (P-I) | neptunium |
| Electron binding energies (P-II) | neptunium |
| Electron binding energies (P-III) | neptunium |
| Electron shell structure | neptunium |
| electronegativity | neptunium |
| Electronegativity (Allen) | neptunium |
| Electronegativity (Allred-Rochow) | neptunium |
| Electronegativity (Mulliken-Jaffe - s) | neptunium |
| Electronegativity (Mulliken-Jaffe - sp) | neptunium |
| Electronegativity (Mulliken-Jaffe -sp2) | neptunium |
| Electronegativity (Mulliken-Jaffe -sp3) | neptunium |
| Electronegativity (Mulliken-Jaffe) | neptunium |
| Electronegativity (Mulliken-Jaffe) p-orbital | neptunium |
| Electronegativity (Pauling) | neptunium |
| Electronegativity (Sanderson) | neptunium |
| Electronic configuration | neptunium |
| Element names and symbols | neptunium |
| Element popularity | neptunium |
| Enthalpy of atomization | neptunium |
| Enthalpy of fusion | neptunium |
| Enthalpy of vaporization | neptunium |
| Geology | neptunium |
| Group Name | neptunium |
| Group numbers | neptunium |
| Hardness - Brinell | neptunium |
| Hardness - Mineralogical | neptunium |
| Hardness - Vickers | neptunium |
| Health hazards | neptunium |
| History of the element | neptunium |
| Hydration enthalpy for metal ion M[I] | neptunium |
| Hydration enthalpy for metal ion M[II] | neptunium |
| Hydration enthalpy for metal ion M[III] | neptunium |
| Hydration enthalpy for metal ion M[IV] | neptunium |
| Hydrolysis constant of hydrated metal ion M(I) | neptunium |
| Hydrolysis constant of hydrated metal ion M(II) | neptunium |
| Hydrolysis constant of hydrated metal ion M(III) | neptunium |
| Hydrolysis constant of hydrated metal ion M(IV) | neptunium |
| Ionic radii (Shannon) | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(-I) ion | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(-II) ion | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(I) ion | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(II) ion | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(III) ion | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(IV) ion | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(V) ion | neptunium |
| Ionic radii (Shannon) for 8-coordinate M(VI) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(-III) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(-II) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(-I) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(I) ion | neptunium |
| Ionic radii (Shannon): low spin octahedral M(II) ion | neptunium |
| Ionic radii (Shannon): high spin octahedral M(II) ion | neptunium |
| Ionic radii (Shannon): low spin octahedral M(III) ion | neptunium |
| Ionic radii (Shannon): high spin octahedral M(III) ion | neptunium |
| Ionic radii (Shannon): low spin octahedral M(IV) ion | neptunium |
| Ionic radii (Shannon): high spin octahedral M(IV) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(V) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(VI) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(VII) ion | neptunium |
| Ionic radii (Shannon) for octahedral M(VIII) ion | neptunium |
| Ionic radii (Shannon) for square planar M(I) ion | neptunium |
| Ionic radii (Shannon) for square planar M(II) ion | neptunium |
| Ionic radii (Shannon) for square planar M(III) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(-III) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(-I) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(-II) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(I) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(II) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(III) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(IV) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(V) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(VI) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(VII) ion | neptunium |
| Ionic radii (Shannon) for tetrahedral M(VIII) ion | neptunium |
| Ionic radius (Pauling) | neptunium |
| Ionic radius (Pauling) for M(-IV) ion | neptunium |
| Ionic radius (Pauling) for M(-III) ion | neptunium |
| Ionic radius (Pauling) for M(-II) ion | neptunium |
| Ionic radius (Pauling) for M(-I) ion | neptunium |
| Ionic radius (Pauling) for M(I) ion | neptunium |
| Ionic radius (Pauling) for M(II) ion | neptunium |
| Ionic radius (Pauling) for M(III) ion | neptunium |
| Ionic radius (Pauling) for M(IV) ion | neptunium |
| Ionic radius (Pauling) for M(V) ion | neptunium |
| Ionic radius (Pauling) for M(VI) ion | neptunium |
| Ionic radius (Pauling) for M(VII) ion | neptunium |
| Ionization energies | neptunium |
| Ionization energy: 1st | neptunium |
| Ionization energy: 2nd | neptunium |
| Ionization energy: 3rd | neptunium |
| Ionization energy: 4th | neptunium |
| Ionization energy: 5th | neptunium |
| Ionization energy: 6th | neptunium |
| Ionization energy: 7th | neptunium |
| Ionization energy: 8th | neptunium |
| Ionization energy: 9th | neptunium |
| Ionization energy: 10th | neptunium |
| Ionization energy: 11th | neptunium |
| Ionization energy: 12th | neptunium |
| Ionization energy: 13th | neptunium |
| Ionization energy: 14th | neptunium |
| Ionization energy: 15th | neptunium |
| Ionization energy: 16th | neptunium |
| Ionization energy: 17th | neptunium |
| Ionization energy: 18th | neptunium |
| Ionization energy: 19th | neptunium |
| Ionization energy: 20th | neptunium |
| Ionization energy: 21st | neptunium |
| Isolation | neptunium |
| Isotopes | neptunium |
| Lattice energies | neptunium |
| Lattice energies (calculated) for MH | neptunium |
| Lattice energies (calculated) for MH2 | neptunium |
| Lattice energies (calculated) for MH3 | neptunium |
| Lattice energies (calculated) for MH4 | neptunium |
| Lattice energies (calculated) for MF | neptunium |
| Lattice energies (calculated) for MF2 | neptunium |
| Lattice energies (calculated) for MF3 | neptunium |
| Lattice energies (calculated) for MF4 | neptunium |
| Lattice energies (calculated) for MCl | neptunium |
| Lattice energies (calculated) for MCl2 | neptunium |
| Lattice energies (calculated) for MCl3 | neptunium |
| Lattice energies (calculated) for MCl4 | neptunium |
| Lattice energies (calculated) for MBr | neptunium |
| Lattice energies (calculated) for MBr2 | neptunium |
| Lattice energies (calculated) for MBr3 | neptunium |
| Lattice energies (calculated) for MBr4 | neptunium |
| Lattice energies (calculated) for MI | neptunium |
| Lattice energies (calculated) for MI2 | neptunium |
| Lattice energies (calculated) for MI3 | neptunium |
| Lattice energies (calculated) for MI4 | neptunium |
| Lattice energies (calculated) for M2O | neptunium |
| Lattice energies (calculated) for MO | neptunium |
| Lattice energies (calculated) for M2O2 | neptunium |
| Lattice energies (calculated) for M2O3 | neptunium |
| Lattice energies (calculated) for MO2 | neptunium |
| Lattice energies (calculated) for MO3 | neptunium |
| Lattice energies (thermochemical cycle) for MH | neptunium |
| Lattice energies (thermochemical cycle) for MH2 | neptunium |
| Lattice energies (thermochemical cycle) for MH3 | neptunium |
| Lattice energies (thermochemical cycle) for MH4 | neptunium |
| Lattice energies (thermochemical cycle) for MF | neptunium |
| Lattice energies (thermochemical cycle) for MF2 | neptunium |
| Lattice energies (thermochemical cycle) for MF3 | neptunium |
| Lattice energies (thermochemical cycle) for MF4 | neptunium |
| Lattice energies (thermochemical cycle) for MCl | neptunium |
| Lattice energies (thermochemical cycle) for MCl2 | neptunium |
| Lattice energies (thermochemical cycle) for MCl3 | neptunium |
| Lattice energies (thermochemical cycle) for MCl4 | neptunium |
| Lattice energies (thermochemical cycle) for MBr | neptunium |
| Lattice energies (thermochemical cycle) for MBr2 | neptunium |
| Lattice energies (thermochemical cycle) for MBr3 | neptunium |
| Lattice energies (thermochemical cycle) for MBr4 | neptunium |
| Lattice energies (thermochemical cycle) for MI | neptunium |
| Lattice energies (thermochemical cycle) for MI2 | neptunium |
| Lattice energies (thermochemical cycle) for MI3 | neptunium |
| Lattice energies (thermochemical cycle) for MI4 | neptunium |
| Lattice energies (thermochemical cycle) for M2O | neptunium |
| Lattice energies (thermochemical cycle) for MO | neptunium |
| Lattice energies (thermochemical cycle) for M2O2 | neptunium |
| Lattice energies (thermochemical cycle) for M2O3 | neptunium |
| Lattice energies (thermochemical cycle) for MO2 | neptunium |
| Lattice energies (thermochemical cycle) for MO3 | neptunium |
| Linear expansion coefficient | neptunium |
| Liquid Range | neptunium |
| Meaning of name | neptunium |
| Melting point | neptunium |
| Melting point of the highest fluoride | neptunium |
| Melting point of the hydride | neptunium |
| Menu to displays of periodic properties | neptunium |
| Molar volume | neptunium |
| NMR data | neptunium |
| Orbital properties | neptunium |
| Period numbers | neptunium |
| Poisson's ratio | neptunium |
| Properties of some compounds | neptunium |
| Radius - metallic (12) | neptunium |
| Reactions of the elements | neptunium |
| Reduction potential of hydrated M(I) ions | neptunium |
| Reduction potential of hydrated M(II) ions | neptunium |
| Reduction potential of hydrated M(III) ions | neptunium |
| Reduction potential of hydrated M(IV) ions | neptunium |
| Reflectivity | neptunium |
| Refractive index | neptunium |
| Rigidity modulus | neptunium |
| Single bond enthalpy in highest bromide | neptunium |
| Single bond enthalpy in highest chloride | neptunium |
| Single bond enthalpy in highest fluoride | neptunium |
| Single bond enthalpy in highest iodide | neptunium |
| Standard atomic weights | neptunium |
| standard reduction potentials | neptunium |
| Standard state | neptunium |
| Superconductivity temperature | neptunium |
| Term symbol | neptunium |
| Thermal conductivity | neptunium |
| thermochemistry | neptunium |
| Thermodynamic properties | neptunium |
| Total mass in 70 kg human | neptunium |
| Uses | neptunium |
| valence orbital R(max) | neptunium |
| valence s-orbital R(max) | neptunium |
| valence p-orbital R(max) | neptunium |
| valence d-orbital R(max) | neptunium |
| valence f-orbital R(max) | neptunium |
| valence s-orbital R(max) | neptunium |
| valence p-orbital R(max) | neptunium |
| valence d-orbital R(max) | neptunium |
| valence f-orbital R(max) | neptunium |
| Van der Waals radius | neptunium |
| Velocity of sound | neptunium |
| X-ray mass absorption coefficients | neptunium |
| X-ray mass absorption coefficients (Ag-Kα) | neptunium |
| X-ray mass absorption coefficients (Co-Kα) | neptunium |
| X-ray mass absorption coefficients (Cr-Kα) | neptunium |
| X-ray mass absorption coefficients (Cu-Kα) | neptunium |
| X-ray mass absorption coefficients (Fe-Kα) | neptunium |
| X-ray mass absorption coefficients (Mo-Kα) | neptunium |
| X-ray mass absorption coefficients (Ni-Kα) | neptunium |
| X-ray mass absorption coefficients (W-Lα) | neptunium |
| Young's modulus | neptunium |
