s Block ElementshardMCQ MULTIPLE

Which of the following statements is/are correct regarding the reaction of alkali metals with dry ais Block Elements Chemistry Question

Question

Which of the following statements is/are correct regarding the reaction of alkali metals with dry air?

Answer: A,B,C

💡 Solution & Explanation

In dry air, Lithium anomalously forms both monoxide ($Li_2O$) and nitride ($Li_3N$). Sodium mainly forms peroxide ($Na_2O_2$) and some superoxide. Potassium, Rubidium, and Cesium form superoxides ($MO_2$) which are yellow/orange and intrinsically paramagnetic due to a 3-electron bond with an unpaired electron, making D incorrect.

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