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  1. Na⁺, Mg²⁺, Al³⁺ and Si⁴⁺ are isoelectronic. The order of their ionic size is
  2. For a reaction, 2NOCl(g) + Cl₂(g) , Kc at 427⁰C is 3 ˣ 10⁻⁶ L.mol⁻¹.
  3. Which of the following gas is called rare gas
  4. Assuming fully decomposed, the volume of CO₂ released at STP on heating 9.85g
  5. In Ramsay and Rayleigh’s isolation on noble gases from air,the nitrogen of the