Element Description Physical characteristics of the element in its pure form. Use or Occurrence How it is (or was) used or where it is found. Click links to find out more.

Element Description Physical characteristics of the element in its pure form. Use or Occurrence How it is (or was) used or where it is found. Click links to find out more. Note: On this chart, a radioactive element is called long-lived if the half-life of any of its isotopes is more than one year; otherwise it is called short-lived. Some super-heavy elements marked short-lived may in future be found to have long-lived isotopes (see island of stability).