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The coordination number and geometry of Cerium in [Ce(NO3)6]2- respectively are:
- a)6 and octahedron
- b)6 and trigonal prism
- c)8 and cubic
- d)12 and icosahedron
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The coordination number and geometry of Cerium in [Ce(NO3)6]2-respecti...
- Cerium, a large atom of lanthanide series, accommodates NO-3 as a bidentate ligand.
- The oxidation number of N in [Ce(NO3)6]2- is +5.
- The oxidation number of O in [Ce(NO3)6]2- is -2.
- Hence, the oxidation number of Ce in [(Ce(NO3)6)]2- is +4.
- Here, 6 nitro ligands are attached to Ce atom, so the coordination number will be 12.
- It has an icosahedron structure.
Thus, the coordination number and geometry of Cerium in [Ce(NO3)6]2- respectively are 12 and icosahedron.
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The coordination number and geometry of Cerium in [Ce(NO3)6]2-respecti...
Coordination Number and Geometry of Cerium in [Ce(NO3)6]2-
Coordination Number:
- The coordination number is the total number of bonds formed between the central atom (in this case, cerium) and its surrounding ligands.
- In the complex [Ce(NO3)6]2-, cerium is bonded to six nitrate (NO3-) ligands.
- Therefore, the coordination number of cerium in [Ce(NO3)6]2- is 12.
Geometry:
- The geometry of a complex is determined by the arrangement of ligands around the central atom.
- In the case of [Ce(NO3)6]2-, with a coordination number of 12, the most suitable geometry is an icosahedron.
- An icosahedron is a 3-dimensional shape with 20 faces, each of which is an equilateral triangle.
- The cerium atom is located at the center of this icosahedral structure, with the nitrate ligands arranged symmetrically around it.
Therefore, the correct answer is option 'D' - 12 as the coordination number and icosahedron as the geometry of cerium in [Ce(NO3)6]2-.
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The coordination number and geometry of Cerium in [Ce(NO3)6]2-respectively are:a)6 and octahedronb)6 and trigonal prismc)8 and cubicd)12 and icosahedronCorrect answer is option 'D'. Can you explain this answer?
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The coordination number and geometry of Cerium in [Ce(NO3)6]2-respectively are:a)6 and octahedronb)6 and trigonal prismc)8 and cubicd)12 and icosahedronCorrect answer is option 'D'. Can you explain this answer? for UGC NET 2025 is part of UGC NET preparation. The Question and answers have been prepared according to the UGC NET exam syllabus. Information about The coordination number and geometry of Cerium in [Ce(NO3)6]2-respectively are:a)6 and octahedronb)6 and trigonal prismc)8 and cubicd)12 and icosahedronCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UGC NET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The coordination number and geometry of Cerium in [Ce(NO3)6]2-respectively are:a)6 and octahedronb)6 and trigonal prismc)8 and cubicd)12 and icosahedronCorrect answer is option 'D'. Can you explain this answer?.
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