• # question_answer Identify the only base which does not have a metal in its molecule. A)  $NaOH$ (Sodium hydroxide) B) $N{{H}_{4}}OH$(Ammonium hydroxide) C) $Mg{{(OH)}_{2}}$ (Magnesium hydroxide) D) $Ca{{(OH)}_{2}}$  (Calcium hydroxide)

Ammonium hydroxide $(N{{H}_{4}}OH)$ is the only commonly used base (alkali) which does not have a metal in its molecule. Instead, it has ammonium $(N{{H}_{4}})$ radical in it.