pElement - Periodic table

pElement is a free interactive periodic table software application. It contains over 65 information items on each element, user selectable skins, 12 colored maps, find element tool, unit conversion tool and more! Examples of information provided in the program include melting point, boiling point, density, year discovered, oxidation states, electronegativity, electron configuration, crystal structures and lattice parameters of all stable phases at atmospheric pressure (190+ total phases), and half-lives and decay modes of 660+ radioactive isotopes. Extended features include a list of 23 fundamental constants, illustration of the activity series of metals, metric system prefixes and a historical summary of superconducting materials.

As you see, This sofftware has a lot of functions :

• Skins :
• info window : of each element when you click it
• Classes : showing Hydrogen, Noble gases,...

• Forms : there are 4 tools in it - Physical State, Metal State, Isotopes and Radioactive State

• Find
• Help : General Help, Settings, Index, References, About.
• Extra tools : Activity Series, Fundamental Constants, Metric System Prefixes, Supercconducting Meterial, Unit Conversion.

Link
pElement v2.0.2