Science

[Detailed information on each element, no write-ups]

Available in 6 languages. Provides information on each element, crystallographic data, physical properties, thermal properties, ionization energies, abundance, isotopes and reduction potentials.

A brief account of how Dmitri I. Mendeleev came up with the decisive idea of how to sort the elements in a more logical way.

[Very basic data] Minimalist table that provides symbols, atomic numbers, and atomic weight with four significant figures.

An interactive and clickable periodic table of the elements, which contains basic element properties and descriptions.

[Basic data, includes printable version] Information on each of the chemical elements and data on their properties. Some site information is only in Czech language.

[X-ray properties only] X-ray properties of most of the elements.

Provides information on the 109 named elements plus elements 110 - 112.

[No element data] An auto-scored blank periodic table. The user fills it in online and the score is returned automatically.

[Very comprehensive data, write-ups, extensive listing of nuclides] Data on elements includes scores of properties, element names in a dozen languages and almost all known nuclides. Environmental chemistry articles round out site.

[Basic data, requires JavaScript] Includes historical information about the elements in Italian, but the table itself is in English.

[Detailed data]

Explains the origins of the names of the chemical elements and lists element names in scores of languages.

A fun way for youngsters to learn the periodic table. Includes learning by symbol or by name.

[No elemental data] Alternate versions of the extended periodic table. Include information on symmetry and electronic configurations.

[Basic data] Based on a wooden 'periodic table' table. Contains photographs of over 200 element samples, with descriptions, experiments, and stories about many of them. Winner of the 2002 Ig Nobel prize in Chemistry.

Interactive periodic table of the elements.

[Basic data] Interactive periodic table by Model Science Software. Available in English and Spanish, web based, Windows and Mac versions. Includes customizable quiz features.

[Detailed data] Interactive periodic table. Including melting point, density, element history and crustal and oceanic abundance.

A printable periodic table. PDF format.

[Basic data] Interactive periodic table. Includes electrical resistivity, vaporization enthalpy and heat capacity.

Interactive periodic table. Containing physical data, chemical properties and health and environmental effects. Available in five languages.

An interactive periodic table with information about each element including the symbol, boiling point, melting point, discoverer and origin.

[Nuclide data only, very extensive listing of nuclides] Map of all known nuclides, with their atomic mass, radioactive decay modes and half-lives, and related information. Brookhaven National Laboratory.

An interactive javascripted periodic table, which contains basic element properties.

[Basic] Periodic table includes ground-state electron configuration, ground-state level, ionization energy, state and frequently used fundamental physical constants.

[Basic] An interactive period chart of the elements.

[Basic] This table lists and describes some well documented and validated parameter sets available for modeling each element by Molecular Mechanics and Quantum Mechanics molecular modeling methods.

[Basic] Simple periodic table of elements.

[Very basic data, detailed write-ups] The Chemical Science and Technology division's Periodic Table describes the history, properties, resources, uses, isotopes, forms, costs, and other information for each element.

The Elements and Isotopes is a comprehensive application that will display information from the Periodic Table and the Table of the Isotopes.

Provides various printable periodic tables in PDF format - from the simplest to the very detailed.

[Detailed data] American Chemical Society's periodic table with visual electronic configurations and interactive plots of physical and chemical properties. Requires Flash.

[Basic data] Provides an annotated table, list of elements and more detailed information.

[Very comprehensive, includes very detailed write ups, basic nuclide data, extensive graphics] Professional scientists and students at school will all find something useful. Includes thousands of images relating to periodicity and structure.

Pictorial version of the periodic table including technical data, photographs and descriptions of thousands of minerals.

Interactive periodic table with element scarcity (SRI), discovery dates, melting and boiling points, group, block and period information.

Traditional periodic table that can be customized with basic facts and printed in color or monochrome. Element facts include names, symbols, weights, atomic numbers, groups, and periods.

Short streaming videos about most every element on the periodic table.