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ATP: Energy Currency

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A metal X forms a water soluble salt $XNO_3$. When an aqueous solution of $XNO_3$​​​​​​​ is added to common salt solution, then a white precipitate of compound Y is formed alongwith sodium nitrate solution. Metal X is said to be the best conductor of electricity and it does not evolve hydrogen when put in dilute hydrohloric acid.
  1. What is metal $X$?
  2. What is salt $XNO_3$​​​​​​​?
  3. Name the compound Y.
  4. Write the chemical equation of the reaction which takes place on reacting $XNO_3​​​​​​​$​​​​​​​solution and common salt solution giving the physical states of all the reactants and products.
  5. What type of chemical reaction is illustrated by the above equation?
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