In addition to the usual information found in such programs, The Atomic Mac also contains a wealth of nuclear information on each isotope, including half life, decay mode and daughter products.
X-ray data (fluorescence and binding energies) is also available, as well as electron shell information.
A molecular weight calculator makes it easy to find the molecular weight of compounds. A shaded diagram showing the ranges of physical properties makes it easy to visualize relationships across the periodic table.
For more detailed information, including on updates, please read the documentation or visit the home page.