A cross-platform application for desktop PCs and notebooks.
Install the application. Configure it; select the "regions" you want to have available.
Regions may be Mathematical formulae, physical or chemical properties, demographic statistics, conversion factors.
When working, right-click and
amongst the pop up menu items you will see "Info". Click this; then "Chemistry", then "Basic", then "Periodic Table".
Immediately, an image of the Periodic Table appears for your reference.
Click anywhere outside the image or press "Esc" to dismiss it.