 ScientificConstants - Maple Programming Help

Home : Support : Online Help : Science and Engineering : Scientific Constants : Functions : ScientificConstants/GetIsotopes

ScientificConstants

 GetIsotopes
 list the descriptors of selected isotopes

 Calling Sequence GetIsotopes( 'element'=elem, prop_name, output_opt )

Parameters

 'element'=elem - (optional); restrict to isotopes of the given element prop_name - (optional); restrict to isotopes with property(ies) prop_name defined. This parameter can be repeated to specify multiple properties. 'output_opt' - (optional); equation of the form output=form, where form is one of 'symbols' (default) or 'atomicnumbers', specify form of isotope descriptors to be returned

Description

 • The GetIsotopes() command returns an expression sequence containing selected isotopes of elements of the periodic table in the ScientificConstants package.
 • If the 'element'=elem option is given, only isotopes of the given element elem are returned, where elem can be any valid descriptor of an element.
 • If any prop_name option(s) are given, only elements with these properties defined are returned.  The prop_name option(s) must be isotopic properties.
 • If the 'output=symbols' option is given, the isotopes are returned in the form [atomic_number, mass_number].  This is the default.
 • If the 'output=atomicnumbers' option is given, the isotopes are returned in the form [atomic_number, mass_number].
 • The sequence of isotopes is ordered first by atomic number, then by mass number.

Examples

 > $\mathrm{with}\left(\mathrm{ScientificConstants}\right):$
 > $\mathrm{GetIsotopes}\left(\mathrm{element}=H\right)$
 ${{H}}_{{1}}{,}{{H}}_{{2}}{,}{{H}}_{{3}}{,}{{H}}_{{4}}{,}{{H}}_{{5}}{,}{{H}}_{{6}}$ (1)
 > $\mathrm{GetIsotopes}\left(\mathrm{electronaffinityisotopic},\mathrm{output}=\mathrm{atomicnumbers}\right)$
 $\left[{1}{,}{1}\right]{,}\left[{1}{,}{2}\right]$ (2)