How many of the following elements react directly with nitrogen in the air to form stable nitrides u — s Block Elements Chemistry Question

💡 Solution & Explanation

Among alkali metals, only Lithium ($Li$) forms a stable nitride ($Li_3N$) directly. All alkaline earth metals ($Be, Mg, Ca, Sr, Ba$) react with $N_2$ upon heating to form nitrides ($M_3N_2$). Therefore, $1 + 5 = 6$ elements.