Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Search for Species Data by IE Value

Note: The search only covers those species which have an ionization energy value that has been evaluated and assigned for search purposes. Currently this amounts to only 40 percent of the species with ionization energy data.

Please follow the steps below to conduct your search (Help):

  1. (Help)
  2. Select the desired units for thermodynamic data:
  3. Select the desired type(s) of data:
    Thermodynamic Data Other Data

Ionization Energy Search Help

Search options (step 1) (Back to search)

You may search for species based on ionization energy values in two ways:

Rules for formula restriction (step 2) (Back to search)

A chemical formula may be entered to restrict the search to species which match the formula. The manner in which the formula is interpreted is controlled by two checkboxes below the formula entry box:

Allow elements not specified in formula
When checked, this option indicates that species containing elements not specified in the formula will also be matched. For example, a search for C2 will match all of the species which contain exactly two carbon atoms and any number of other atoms.
Allow more atoms of elements in formula than specified
This option indicates that species containg more atoms than specified of a given element will be matched. For example, a search for HC with only this option checked will match only hydrocarbons.

Rules for data types (step 4) (Back to search)