Usage manual

You have basically two variables integrated into a query. "table" - array which holds every element in a periodic table with properties.
Second accessible variable is "z", which simply is an index to a table array for getting current element with atomic number z.
Then you simply write a Javascript function which must return "true" for elements which will be highlighted after "select" button press.

Some usage examples:

• Even number of protons
• Same number of protons and neutrons
• Ancient elements (which were known long before modern world)
• Forms short covalent bonds
• Has density similar to water
• Has sound speed similar to that in Carbon
• Electrical resistivity as in Copper
• Double-ionization is more troublesome than a third ionization
• Heaviest elements
• Less researched elements
• Exchanges only pairs of electrons in oxidation reactions
• Outer subshells are fully filled by electrons
• Cryogenical elements with low boiling temperatures
• Lowest boiling temperature (It also is a superfluid too)
• Number of nucleons and protons both are primes
• Weak correlation of Young's modulus and sound speed in a solid

Supported element properties in query expressions:

• name - Element name, dimensionless.
• symb - Symbol, 1 or 2 characters, dimensionless.
• anum - Atomic number (number of protons), dimensionless.
• grup - Group number to which element belongs, dimensionless. Some elements has no group, these marked with '⁎','⁎⁎'.
• perd - Period of element (row number in table), dimensionless.
• catg - Category of classification, dimensionless.
• awei - Atomic weight (average number of nucleons), dimensionless.
• ecfg - Electron configuration string in atom shells and sub-shells, dimensionless.
• phas - Phase at standard conditions (room temperature), dimensionless.
• melp - Melting point in K.
• boip - Boiling point in K.
• hfus - Heat of fusion in kJ/mol.
• hvap - Heat of vaporization in kJ/mol.
• hcap - Molar heat capacity in J/(mol·K).
• oxis - Oxidation states, measured in number of electrons exchanged in oxidation reactions.
• eneg - Electronegativity degree using Pauling scale, dimensionless.
• ione - List of ionization energies (typically 1..3 ionizations), measured in kJ/mol.
• covr - Covalent radius (atom size in covalent bonds) in pm.
• waar - Van der waals radius of atom (represents packing of atoms), measured in pm.
• cstr - Crystal structure of lattice, dimensionless.
• cont - Thermal conductivity in W/(m·K).
• mago - Magnetic ordering type of electron spins, dimensionless.
• disc - Year of discovery. BCE dates are marked with negative integers.
• dens - Density at standard conditions (room temperature), measured in g/cm^3.
• ator - Atomic radius in pm.
• sous - Speed of sound in thin rod, measured in m/s.
• expt - Thermal expansion in µm/(m·K).
• rese - Electrical resistivity in Ω·m.
• youm - Youngs modulus in GPa.
• shem - Shear modulus in GPa.
• bulm - Bulk modulus in GPa.
• brih - Brinell hardness in MPa.

Research interests

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