AIIMS2019Chemistry-Coordination Compounds
AIIMS 2019 Chemistry Complex Ion Equilibria MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The molar ionic conductance of the octahedral complexes:
(i)
(ii)
(iii)
(iv)
Follow the order
A
i<ii<iii<iv
B
iv<iii<ii<i
C
iii<iv<ii<i
D
iv<iii<i<ii
Correct Answer
Option B
Detailed Explanation
In the reactions provided, the number of ions produced upon dissociation varies with the coordination number of ammonia (NH₃) ligands bonded to platinum (Pt). For [Pt(NH₃)₅Cl]Cl₃, the dissociation yields 4 ions, while [Pt(NH₃)₄Cl₂]Cl₂ produces 3 ions, and [Pt(NH₃)₃Cl₃]Cl results in 2 ions. However, [Pt(NH₃)₂Cl₄] does not dissociate into ions, making it a non-ionic complex with 0 ions. Therefore, option B is correct as it represents the only non-ionic reaction among the given complexes. The other options are not applicable as they do not pertain to the question's context.
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