Which one of the following when dissolved in water gives

Question:

Which one of the following when dissolved in water gives coloured solution in nitrogen atmosphere?

  1. $\mathrm{CuCl}_{2}$

  2. $\mathrm{AgCl}$

  3. $\mathrm{ZnCl}_{2}$

  4. $\mathrm{Cu}_{2} \mathrm{Cl}_{2}$


Correct Option: 1,

Solution:

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