ChemTable is a freeware Periodic Table application that runs on monochrome Palm OS handhelds.

The program is quite straightforward to use. Tapping on any of the element boxes in the Periodic Table will bring up a dialog showing a list of physical/chemical properties.

In the Options menu, you can choose to display either element symbols or atomic numbers in the table. You can also select a subset of the elements for display (Transition Metals, Halogens, Noble Gases, etc).

Only half of the Periodic Table can be viewed at a time. To switch between the two sections, click on the left or right arrow buttons.

Update Description:

v2.29 (05/10/08):
– Using the 5-way navigator to move between the two halves of the periodic table is now much easier. For example, if "Co" is highlighted by the blue focus ring, pressing the right rocker key moves the highlight to "Ni" in the other half of the table. Also made a number of minor bug fixes.

v2.28 (30/08/08):
- Added support for 5-way navigation (Palm TX, Treo 600 or higher, and Centro). - Fixed a rendering problem on devices that display more than 256 colors.

v2.27 (20/01/08):
- Updated the atomic weights to IUPAC 2007 values.
- Numerous bug fixes and code optimizations.
- Improved support for localization and user customization.
- Many thanks to Steffen Olbrich for assisting with the translation of ChemTable to German.

v2.26 (18/01/07):
- Updated the mass numbers of radioactive elements to the latest IUPAC values.
- Added support for 240x240 resolution.
- Now runs on StyleTap.

v2.25 (01/08/06):
- Updated the atomic weights to IUPAC 2005 values.
- The element list can now be sorted by name, symbol, or atomic number.

v2.23 (25/07/05):
- Added isotope abundances (IUPAC 1997).
- Revised the electron affinity data.
- Improved support for grayscale devices.

v2.22 (30/07/04):
- Added a mode selection popup to the top right corner of the periodic table and element list forms.
- Renamed Unununium (Element 111) to Roentgenium.
- Minor bug fixes.