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The coordination number of Cr in [Cr (NH3)3 (H2O)3]
- a)3
- b)6
- c)4
- d)2
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The coordination number of Cr in [Cr (NH3)3(H2O)3]a)3b)6c)4d)2Correct ...
Coordination number of the central ion is equal to no. of coordination bonds formed with surrounding ions.
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The coordination number of Cr in [Cr (NH3)3(H2O)3]a)3b)6c)4d)2Correct ...
Understanding Coordination Number
The coordination number of a metal ion in a complex refers to the number of ligand donor atoms that are bonded to it. In the case of the complex [Cr(NH3)3(H2O)3], we need to analyze the ligands attached to chromium (Cr).
Identifying Ligands
- The complex contains two types of ligands:
- Ammonia (NH3), which is a neutral ligand.
- Water (H2O), which is also a neutral ligand.
Counting the Ligands
- There are three NH3 ligands.
- There are three H2O ligands.
Calculating the Coordination Number
- To find the coordination number, we simply add the number of donor atoms from each ligand type:
- From NH3: 3 ligands x 1 donor atom each = 3
- From H2O: 3 ligands x 1 donor atom each = 3
- Total coordination number = 3 (from NH3) + 3 (from H2O) = 6
Conclusion
Thus, the coordination number of Cr in the complex [Cr(NH3)3(H2O)3] is 6. This means that option 'B' is correct. The coordination number reflects how many atoms are directly bonded to the metal ion, which in this case is chromium.
The coordination number of a metal ion in a complex refers to the number of ligand donor atoms that are bonded to it. In the case of the complex [Cr(NH3)3(H2O)3], we need to analyze the ligands attached to chromium (Cr).
Identifying Ligands
- The complex contains two types of ligands:
- Ammonia (NH3), which is a neutral ligand.
- Water (H2O), which is also a neutral ligand.
Counting the Ligands
- There are three NH3 ligands.
- There are three H2O ligands.
Calculating the Coordination Number
- To find the coordination number, we simply add the number of donor atoms from each ligand type:
- From NH3: 3 ligands x 1 donor atom each = 3
- From H2O: 3 ligands x 1 donor atom each = 3
- Total coordination number = 3 (from NH3) + 3 (from H2O) = 6
Conclusion
Thus, the coordination number of Cr in the complex [Cr(NH3)3(H2O)3] is 6. This means that option 'B' is correct. The coordination number reflects how many atoms are directly bonded to the metal ion, which in this case is chromium.
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The coordination number of Cr in [Cr (NH3)3(H2O)3]a)3b)6c)4d)2Correct answer is option 'B'. Can you explain this answer? for Class 12 2026 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The coordination number of Cr in [Cr (NH3)3(H2O)3]a)3b)6c)4d)2Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The coordination number of Cr in [Cr (NH3)3(H2O)3]a)3b)6c)4d)2Correct answer is option 'B'. Can you explain this answer?.
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