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The correct order of intensity of colors

Question:

The correct order of intensity of colors of the compounds is :

  1. $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}>\left[\mathrm{NiCl}_{4}\right]^{2-}>\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$

  2. $\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{NiCl}_{4}\right]^{2-}>\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}$

  3. $\left[\mathrm{NiCl}_{4}\right]^{2-}>\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}$

  4. $\left[\mathrm{NiCl}_{4}\right]^{2-}>\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}>\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$


Correct Option: , 3

Solution:

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