Trends of Periodic Table

In this section trends of periodic table will be covered. These include electronegativity, electron affinity, atomic radius, ionization energy and metallic character.  

If you look at the periodic table, we can see that it has a somewhat rectangular shape and two corners of it are very important: the top right corner and bottom left corner. Metallic character increases going down a group and going left a period. The same holds for atomic radius. The electronegativity, electron affinity, and ionization energy all generally increase going up a group and going right a period, so remember that the top right corner is where electronegativity, electron affinity, and ionization energy are the highest, and the bottom left corner is where the atomic radius and metallic character are the highest. Noble gases are an exception to some of these trends because they have low electron affinities and, sometimes, undefined electronegativities.