Ch2 Q.71 Diagonal Relationship

[Mirna_Velasco_1L]

Can someone please explain to me what exactly is the Diagonal relationship and how does it arises? I read the section in the book, but I am still confuse. I will greatly appreciate your help!

[Tyler_Ash_3C]

A diagonal relationship is when diagonal elements in the Periodic Table show similar chemical properties. For example, elements that have similar atomic radius and ionization energies will likely exhibit similar chemical properties. The diagonal strip of metalloids demonstrates this characteristic since they share certain chemical properties. This makes sense because as you move right on the periodic table, atomic radius decreases, but as you move down the table, atomic radius increases. So it makes sense that diagonal elements would have similar atomic radii and thus similar chemical properties.