Unit: | SDL_cdata | Class: | none | Declaration: | function ExactAtWeight (AtNr: integer): double; |
The function ExactAtWeight returns the exact atomic mass of the atom with the atomic number AtNr (referring to C=12.000). The atomic mass returned refers either to the most abundant isotope, or to the most stable isotope. The parameter AtNr may take any value between 1 and 103 (MaxChemElem); a zero value is returned for any invalid argument.
Example: |
The statement ExactAtWeight (17) returns the value 34.968854 (for chlorine-35)
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