Which of the following alkaline earth metals is kinetically inert to oxygen in its massive form at r — s Block Elements Chemistry Question

💡 Solution & Explanation

Beryllium ($Be$) is kinetically inert to oxygen in massive form below $873\text{ K}$ due to the formation of a thin, passive protective layer of $BeO$. However, powdered Beryllium burns brilliantly to give $BeO$ (which is amphoteric) and $Be_3N_2$.