In the elements below lead (82), radioactive processes are dominated by positive and negative beta decay. At each atomic mass number, there are one, two, or sometimes three stable isotopes.

This proven track record made Penney the obvious choice to lead Element Appliances, explains Michael O’Shaughnessy, Element’s CEO. “Jay Penney is one of the most recognized leaders in the major ...

In the elements below lead (82), radioactive processes are dominated by positive and negative beta decay. At each atomic mass number, there are one, two, or sometimes three stable isotopes.

Beyond lead (elements with Z greater than 82), however, no known element is completely stable, nor is any expected to be from theoretical models.