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  2. Question
  3. Chemistry
  4. The correct statement on the isomerism associated with the following complex ions, (a) [Ni(H2O)5NH3]2+, (b) [Ni(H2O)4(NH3)2]2+ and (c) [Ni(H2O)3(NH3)3]2+ is :

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Q. The correct statement on the isomerism associated with the following complex ions,
(a) $[Ni(H_2O)_5NH_3]^{2+}$,
(b) $[Ni(H_2O)_4(NH_3)_2]^{2+}$ and
(c) $[Ni(H_2O)_3(NH_3)_3]^{2+}$ is :

JEE MainJEE Main 2015Coordination Compounds

Solution:

$(II)$ and $(III)$ show only geometrical isomerism. $\left[ Ni \left( H _{2} O \right)_{4}\left( NH _{3}\right)_{2}\right]^{2+}$ show cis and trans-isomers. These are followings
image
$\left[ Ni \left( H _{2} O \right)_{3}\left( NH _{3}\right)_{3}\right]^{2+}$ show facial and meridional geometrical isomerism.
image