For example, a quick glance at Figure AT5.2. Although astatine is radioactive and only has.
These five toxic, non-metallic elements make up Group 17 of the periodic table and consist of: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The halogens are located on the left of the noble gases on the periodic table. That way, we can get a better look at the relationship. Group 17: General Properties of Halogens. Often it is useful to plot data on a graph.
The most reactive metals are at the top of the table and the least reactive. As a result, fluorine is usually thought of as the most electronegative element. The table shows these metals into an order of reactivity based on observations of how each metal reacts with oxygen. However, on many scales, fluorine would be the most electronegative atom here. As a result, noble gases are also given electronegativity values on this scale. The Allen scale just depends on the ability of an atom to interact with light, which is something even noble gases can do. O Level questions usually present experimental data in the form of a table, like the one below from the 2017 paper.
Some electronegativity scales do not have values for the noble gases, because they are based on experimental measurements of compounds, and noble gases do not commonly form compounds with other elements. \): The Allen electronegativity values of the second-row elements.
