Chemistry-Coordination Number
NEET Chemistry Coordination Number MCQ Question
Type: MCQ-diagram based-Medium-Class 12
In the diagram shown above, which complex ion has a coordination number of 4?
A
[Ni(NH₃)₄]²⁺
B
[Fe(C₂O₄)₃]³⁻
C
[Co(en)₃]³⁺
D
[Pt(NH₃)₆]²⁺
Correct Answer
Option A
Detailed Explanation
The coordination number is determined by the number of ligand donor atoms bonded to the central metal ion. [Ni(NH₃)₄]²⁺ has a coordination number of 4, as it is bonded to four NH₃ ligands.
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