pElement is a periodic table software application that is ideal for middle school students with a strong interest in science, high school students taking chemistry classes, college students taking science and engineering classes, educators and professionals. The program provides a wealth of information on the elements and a number of software features.

pElement is a free interactive reference tool on the periodic table. 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.

General Information
· Element Symbol
· Atomic Number
· Element Name
· Atomic Weight
· Description
· Recognized By
· Year Discovered
· Minerals
· Primary Source
· Major Mining Locations
· CAS Registry Number

Chemical Information
· Atomic Radius
· Ionic Radius
· van der Waals Radius
· Covalent Radius
· Electronegativity
· Effective Nuclear Charge
· Oxidation States
· Enthalpy of Formation (solid)
· Enthalpy of Formation (gas)
· Free Energy of Formation (solid)
· Free Energy (gas)
· Entropy (solid)
· Entropy (gas)

Electron Information
· Electron Configuration
· Electron Affinity
· Polarizability
· Electron Work Function
· 1st Ionization Energy
· 2nd Ionization Energy
· 3rd Ionization Energy
· 4th Ionization Energy
· 5th Ionization Energy
· X-ray Energies (K?1, K?1, L?1, L?1 and M?1)
· Electron Binding Energies K (1s) to NII (4p1/2)
Physical Information
· Melting Point
· Boiling Point
· Critical Temperature
· Critical Pressure
· Heat of Fusion
· Heat of Vaporization
· Heat of Sublimation @ 25°C
· Vapor Pressure
· ?Vmelting
· Density (solid)
· Density (liquid)
· Density (gas)
· Molar Volume
· Young's Modulus
· Shear Modulus
· Bulk Modulus
· Poisson's Ratio
· Mean Specific Heat @ 25°C
· Thermal Conductivity @ 2 Temps.
· Electrical Resistivity @ 2 Temps.
· Temperature Coefficient of Resistivity (0-100°C)
· Mass Magnetic Susceptibility
· Coefficient of Expansion @ 25°C

Crystal Structure Information
· Crystal Structures of all Stable Phases @ Atmospheric Pressure (190+ Phases)
· Lattice Parameters of Crystal Structures
Other Features
· Column Notation Toggle (between New and CAS version)
· Find Element Tool
· Element Index
· Data Index

Nuclear Information
· Number of Isotopes
· Isotope Mass Range
· Neutron Scattering Length
· Thermal Neutron Capture Cross-Section
· Natural Isotopes (280+)
· Abundance of Natural Isotopes
· Radioactive Isotopes (660+)
· Half-Lives of Radioactive Isotopes
· Decay Modes of Radioactive Isotopes

Colored Maps
· Classes
· 2000Physical State
· Metal State
· Isotope Information
· Radioactive State
· Melting Point
· Atomic Radius
· Electronegativity
· First Ionization Energy
· Young's Modulus
· Thermal Neutron Capture Cross Section
· Density (solid)

Extra Information
· Activity Series of Metals
· Fundamental Constants (23 total)
· Metric System Prefixes
· Superconducting Materials
· Unit Conversion Tool

eNotes
· Fundamentals of Chemistry