The figure above is probably not how one should choose to teach students about the periodic table, but it illustrates a point. Note that most the everyday elements—the ones we've all heard of— are ...
NIST's James Sims and IU's Stanley Hagstrom have calculated the base energy levels for the four electrons in the element beryllium, an accomplishment that has required nearly an entire career's effort ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback