!Elements is the sister program to !Isotopes, and like !Isotopes, contains a massive amount of information on all the known elements and their isotopes. Being element based, the nuclear properties of all the isotopes of one element are shown on plots like the one you see here for uranium. There are other plots for nuclear spin, decay mode, branching ratios, packing fraction, binding energy, thermal neutron cross sectional area, mass defect, halflife, parity, activity and disintegration energy as well as all the chemical and physical properties of the elements.