Ionization and bond energy of isotope [closed]








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Is there a database with the direct values, or the ingredients to calculate them, for ionization and bond energies of isotopes (i.e. $^{17}O\_2$). If I understand it right, ionization energy can be calculated using the atom radius but I cannot find such information for isotopes and I guess it's still slightly different to the one of the abundand forms. Also, for bond energy I read it can be calculated using enthalpies but can't find such data for isotopes either. Thanks in advance!




I don't know of any such tables. For chemistry the values are so close as to make no difference except for very light elements such as hydrogen.


All in all you should be able to get a good idea of the difference by using the difference in reduced mass, $m\_\mathrm{r}$.


$$m\_\mathrm{r} = \dfrac{m\_\mathrm{electron}m\_\mathrm{nucleus}}{m\_\mathrm{electron}+m\_\mathrm{nucleus}} = m\_\mathrm{electron}\cdot \dfrac{1}{1+ \dfrac{m\_\mathrm{electron}}{m\_\mathrm{nucleus}}}$$


So for $\ce{^{16}O}$


$$m\_\mathrm{r,\ce{^{16}O}} = \dfrac{1}{1+\dfrac{5.489\cdot10^{-4}}{15.995}} = ‭0.9999657$$


for $\ce{^{17}O}$


$$m\_\mathrm{r,\ce{^{17}O}} = \dfrac{1}{1+\dfrac{5.489\cdot10^{-4}}{16.999}} = ‭0.9999677$$


% Difference between $m\_\mathrm{r,\ce{^{17}O}}$ and $m\_\mathrm{r,\ce{^{16}O}}$ = +0.00020%


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