The diagonal relationship between Beryllium () and Aluminium () is heavily pronounced in their chemi — Periodic Table and Periodicity Chemistry Question
Question
The diagonal relationship between Beryllium ($Be$) and Aluminium ($Al$) is heavily pronounced in their chemistry, such as the formation of amphoteric oxides. This chemical similarity is primarily attributed to their almost identical:
Answer: C
💡 Solution & Explanation
Elements located diagonally across periods 2 and 3 often share similar properties because the increase in electronegativity and polarizing power (charge/size ratio) across a period is effectively cancelled out by the decrease down a group. Thus, $Be$ and $Al$ have nearly identical ionic potentials and electronegativities ($\approx 1.5$).
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