The correct statement on the isomerism associated with the following complex ions.
(a) \(\mathrm{[Ni(H_2O)_5NH_3]^{2+}}\)
(b) \(\mathrm{[Ni(H_2O)_4(NH_3)_2]^{2+}}\) and
(c) \(\mathrm{[Ni(H_2O)_3(NH_3)_3]^{2+}}\) is:
(a) \(\mathrm{[Ni(H_2O)_5NH_3]^{2+}}\)
(b) \(\mathrm{[Ni(H_2O)_4(NH_3)_2]^{2+}}\) and
(c) \(\mathrm{[Ni(H_2O)_3(NH_3)_3]^{2+}}\) is:
Show Hint
- (a) and (b) show only geometrical isomerism
- (a) and (b) show geometrical and optical isomerism
- (b) and (c) show geometrical and optical isomerism
- (b) and (c) show only geometrical isomerism
The Correct Option is D
Solution and Explanation
(a) \(\mathrm{MA_5B}\): only one arrangement, no isomerism.
(b) \(\mathrm{MA_4B_2}\): cis and trans forms (geometrical); both have a plane of symmetry, so neither is optically active.
(c) \(\mathrm{MA_3B_3}\): facial and meridional forms (geometrical); both have a plane of symmetry, so no optical isomerism.
Hence (b) and (c) show only geometrical isomerism.
Answer: (4) (b) and (c) show only geometrical isomerism
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