See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

In I group only Li form nitride and all II group metals form nitride.     2 H O moist 2 3 2 3 2 Mg N Mg N Mg OH NH         2 H O moist 2 3 2 3 2 Ca N Ca N Ca OH NH       2 H O moist 2 3 3 Li N Li N LiOH NH     2 K N No reaction  