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JEE Main20202 Sep 2020Evening ShiftChemistrys Block ElementsActual

Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B , respectively, are :

Options

  1. ANa and Rb
  2. B  Na   and Ca
  3. CCs and Ba
  4. DLi and Mg

Correct answer

D. Li and Mg

Step-by-step solution

Li and Mg do not form solid bicarbonate. But react with N 2 to give nitrides. Both of them have similar properties due to diagonal relationship. 6   Li + N 2 ⟶ Δ   2   Li 3 N 3   Mg + N 2 ⟶ Δ Mg 3 N 2

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