This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
 Documentation / Mathematica / Add-ons / Standard Packages / Miscellaneous  /

Miscellaneous`ChemicalElements`


Basic properties of the chemical elements.

  • This loads the package.
  • In[1]:= <<Miscellaneous`ChemicalElements`

  • This gives the atomic weight of tungsten using the data in the package.
  • In[2]:= AtomicWeight[Tungsten]

    Out[2]=

  • If you ask for the atomic weight of an unstable element, Mathematica prints a warning message.
  • In[3]:= AtomicWeight[Plutonium]

    AtomicWeight::unstable: No stable isotope of Plutonium exists.

    Out[3]=

  • This switches off the warning message.
  • In[4]:= Off[AtomicWeight::unstable]

  • Here is a plot of the ratio of atomic weight to atomic number for all the elements.
  • In[5]:= ListPlot[ AtomicWeight[Elements]/
    AtomicNumber[Elements],
    PlotJoined -> True]



    Physical properties of chemical elements.

    The densities given are usually for the elements at Kelvin. A message is generated if the density given is for another temperature or for a special form of the element. The thermal conductivities are for the specified elements at

    Kelvin unless a message is returned giving an exception.

  • This gives the heat of fusion of nitrogen.
  • In[6]:= HeatOfFusion[Nitrogen]

    Out[6]=

  • When you ask for the density, Mathematica warns you that this density is taken at a temperature of 21 Kelvin. The standard used for most other elements is 298 Kelvin.
  • In[7]:= Density[Nitrogen]

    Density::temp: Density is for Nitrogen at 21 Kelvin.

    Out[7]=

  • This thermal conductivity is for the gaseous state.
  • In[8]:= ThermalConductivity[Nitrogen]

    ThermalConductivity::form: Thermal conductivity is for the gaseous form of Nitrogen.

    Out[8]=


    Electronic structure of chemical elements.

    When you use ElectronConfiguration to get the electronic configuration of an element, the result is a list using the standard order of listing of subshells , , , . Each shell is grouped into a sublist. ElectronConfigurationFormat

    returns the number of electrons in each subshell along with the label for the subshell.

  • This gives the electronic configuration as a list in the standard format.
  • In[9]:= ElectronConfiguration[Actinium]

    Out[9]=

  • This includes the orbital labels in the list.
  • In[10]:= ElectronConfigurationFormat[Actinium]

    Out[10]=