AP EAMCET20224 Jul 2022Evening ShiftChemistrys Block ElementsActual
The pair of elements that form both oxides and nitrides, when burnt in air are
Options
- ANa , Mg
- BNa , Be
- CMg , Ca
- DBe , Mn
Correct answer
C. Mg , Ca
Step-by-step solution
Reaction of magnesium or calcium with oxygen gives magnesium oxide or calcium oxide. 2 Mg + O 2 From   air ⟶ 2 MgO Reaction of magnesium or calcium with nitrogen gives Mg 3 N 2   or   Ca 3 N 2 . The chemical reaction is as follows. 3 Mg + N 2 From   air ⟶ Mg 3 N 2 Hence, metal are magnesium and calcium.