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Periodic Table of Data: help

Using the Periodic Table

At the centre of this resource is the Periodic Table. Running the mouse an element displays basic information on that element, plus the value of the one special property selected using the Visualisation menu.

Selecting the elements

Elements in the Periodic Table may be selected or unselected. Selected elements appear in colour, whereas unselected elements are drawn in grey. Note: when using the List Data or Graph Data tools its is possible to specify that only data for selected elements are used. Changing the selection as described below will cause these windows to automatically update.

Elements may be selected in a number of ways:

  • Using the all, none and invert buttons.
  • Entering the atomic number, the symbol or a fragment of the name and pressing go.
  • Using the other Element Selection controls to select elements by Group, Block or Period. Holding down the Ctrl key causes the selection to be extended.
  • Using the Elements known in year control - enter a year and press the go button

Finally, if the Clicking an element will change item is set to selection then clicking an element's symbol in the Periodic Table will change its selection.

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Visualising trends in data

Use the Visualisation menu in the top right of the window to select a property. The value of the selected property for selected elements is represented as the height of a bar or as the brightness of a colour. This allows a rapid visual appreciation of the trend of that property across the selected elements. Data for unselected elements is shown in grey and an arrow indicates a value greater than the current maximum. If no data value is available then the element is not displayed.

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Viewing the data

There are two tools for viewing tables of data.

Display the Element Data WindowThe Element Data tool

This tool shows all the data for a particular element. Initially the data for the first selected element is displayed, but this may be changed by clicking an element in the Periodic Table (if the Clicking an element will change item is set to element data), in the List Data window or by entering the name (or unique fragment), symbol or atomic number of the element in the Select element field and pressing go.

Display the List Data WindowThe List Data tool

This tool displays a table of data for all the currently selected elements (changing the selection will cause the table to update). Initially the name, symbol and atomic number and listed in the table. Other properties can be added or removed from the list of data by selecting a property in the Select properties drop down menu and using the add and remove buttons, or else using the none, all and ionisation energies buttons.

Clicking any column heading button in the list of data will sort the data in that column in ascending numerical order. The column heading button will have a green border. Clicking again will sort it in descending order and the column heading button will have a red border. Non- numerical data will be sorted alphabetically.

Exporting the data

Data from either of these tables may be exported to another application (such as a spreadsheet) by selecting the data in the table and using the copy function of your browser to copy the data to the clipboard or by using the copy to clipboard button which will copy the whole of the current table to the clipboard. You may then open the application and paste the data in the usual way.

See Notes on properties for details of the data.

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Display the Graph Data WindowGraph Data

This tool displays a graph for all the currently selected elements (changing the selection will cause the graph to update). Select the property you wish to plot on the y (vertical) axis from the Plot menu and the property you wish to plot on the x (horizontal) axis from the Select x axis menu and click add plot. The style of graph and colour of points can be changed by using the Style box.

Further plots may be superimposed on the first plot by selecting a second property for the vertical axis and clicking add plot. However, once one property is plotted this choice is restricted to properties which are measured in the same units as those properties already plotted. To remove a plot, select the property you wish to remove in the plot menu and click remove plot.

New Graph windows may be created at any time by pressing the Graph Data button.

See Notes on properties for details of the data.

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Display the Energy Levels WindowEnergy Levels

To show the energies of atomic orbitals in selected elements, click Energy Levels. Initially the first three selected elements are shown. For lighter elements, up to three sets of energy levels can be displayed at once but for elements with many occupied energy levels, only two can be displayed. The zoom, freeze scale and smart scaling functions may be used to examine particular areas of the energy level diagrams and to facilitate comparisons between elements.

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Display the Energy Levels WindowDot Cross Diagrams

Dot Cross Diagrams displays a window allowing such diagrams to be constructed by dragging electrons between atoms or ions. Follow the on-screen instructions for more information.

At present only ionic bonding is supported, but support for covalent bonding is under development!

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