The Tools/Elements menu item brings up the Periodic Table of the Elements.
Clicking on an element brings up more detailed information.
The full name of the element and its family are shown along with its
valency. Symbols show the element's state at room temperature,
and whether it is radioactive or
toxic. The atomic number, weight,
and physical properties are also shown with adjacent buttons. If the button
is pressed, you are returned to the calculator with that value entered into the
display. The units used to display properties can be changed by selecting the
units in the Units dialog and selecting it as the "To" units.