When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-( P)b)[Co(H2O)6]3+( P)c)Fe(CO)5( P)d)[PdCl2(SCN)2]2-( P)Correct answer is option 'B'. Can you explain this answer?

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In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes of

and

lie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are

(i) Pairing may start with 4^th electron in t_2g orbitals.
(ii) Pairing may start normally with 6^th electrons when t_2g and e_g orbitals are singly filled.

Select incorrect match for the following complexes.

a)
[IrF₆]^3- (Δ > P)
b)
[Co(H₂O)₆]³⁺ (Δ < P)
c)
Fe(CO)₅ (Δ > P)
d)
[PdCl₂(SCN)₂]^2- (Δ > P)

Correct answer is option 'B'. Can you explain this answer?

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When a transition metal ion (usually) is involved in octahedral comple...

[Co(H₂O)₆]³⁺ Δ> P as for
Co³⁺ Cl^–, I^–, Br^–, F^– are only weak field ligands, rest are strong field ligands.

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When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Which of the following electronic arrangement is /are possible for inner orbital oct complex.(I)(II)(III)(IV)Select the correct code

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Read the passage given below and answer the following questions:The crystal field theory (CFT) is an electrostatic model which considers the metal-ligand bond to be ionic arising purely from electrostatic interactions between the metal ion and the ligand. Ligands are treated as point charges in case of anions or dipoles in case of neutral molecules. The five d orbitals in an isolated gaseous metal atom/ion have same energy, i.e., they are degenerate. This degeneracy is maintained if a spherically symmetrical field of negative charges surrounds the metal atom/ ion. However, when this negative field is due to ligands (either anions or the negative ends of dipolar molecules like NH3 and H2O) in a complex, it becomes asymmetrical and the degeneracy of the d orbitals is lifted. It results in splitting of the d orbitals.The following questions are multiple choice questions. Choose the most appropriate answer:Q. An aqueous pink solution of cobalt(II) chloride changes to deep blue on addition of excess of HCl. This is because _____________.

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Read the passage given below and answer the following questions:The crystal field theory (CFT) is an electrostatic model which considers the metal-ligand bond to be ionic arising purely from electrostatic interactions between the metal ion and the ligand. Ligands are treated as point charges in case of anions or dipoles in case of neutral molecules. The five d orbitals in an isolated gaseous metal atom/ion have same energy, i.e., they are degenerate. This degeneracy is maintained if a spherically symmetrical field of negative charges surrounds the metal atom/ ion. However, when this negative field is due to ligands (either anions or the negative ends of dipolar molecules like NH3 and H2O) in a complex, it becomes asymmetrical and the degeneracy of the d orbitals is lifted. It results in splitting of the d orbitals.The following questions are multiple choice questions. Choose the most appropriate answer:Q. The CFSE for octahedral [CoCl6]4− is 18,000 cm−1. The CFSE for tetrahedral [CoCl4]2− will be

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The brown ring formed at the junction of two layers in the test of nitrate is due to the formation of a complex ion, [Fe(H2O)5NO]2+. Which of the following statements are correct for this complex [u = 3.87 B.M.)(i) Oxidation state of Fe is +1 and NO exists as NO+.(ii) The complex ion is in octahedral geometry as attained by sp3d2 hybridisation.(iii) The complex is paramagnetic and has three unpaired electrons due to transfer of electron from NO to Fe2+.(iv) The complex is in octahedral geometry as attained by d2sp3 hybridisation.(v) The brown colour of the complex is attributed to d-d transition of electron.

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Read the passage given below and answer the following questions:The transition metals when exposed to oxygen at low and intermediate temperatures form thin, protective oxide films of up to some thousands of Angstroms in thickness. Transition metal oxides lie between the extremes of ionic and covalent binary compounds formed by elements from the left or right side of the periodic table. They range from metallic to semiconducting and deviate by both large and small degrees from stoichiometry. Since d-electron bonding levels are involved, the cations-exist in various valence states and hence give rise to a large number of oxides. The crystal structures are often classified by considering a cubic or hexagonal close-packed lattice of one set of ions with the other set of ions filling the octahedral or tetrahedral interstices. The actual oxide structures, however, generally show departures from such regular arrays due in part to distortions caused by packing of ions of different size and to ligand field effects. These distortions depend not only on the number of d-electrons but also on the valence and the position of the transition metal in a period or group.In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion (

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When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer?

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When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer?.

Solutions for When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.

Here you can find the meaning of When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer?, a detailed solution for When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice When a transition metal ion (usually) is involved in octahedral complex formation, the five degenerate d-orbitals split into two set of degenerate orbitals (3 + 2). Three degenerate orbitals of lower energy (dxy, dyz, dzx) and a set of degenerate orbitals of higher energy (dx2 –y2and dz2). The orbitals with lower energy are called t2gorbitals and those with higher energy are called egorbitals.In octahedral complexes, positive metal ion may be considered to be present at the centre and negative ligands at the corner of a regular octahedron. As lobes ofandlie along the axes, i.e., along the ligands the repulsions are more and so high is the energy. The lobes of the remaining three d-orbitals lie between the axes. i.e., between the ligands. The repulsion between them are less, so lesser the energy. In the octahedral complexes, if metal ion has electrons more than 3 then for pairing them the option are(i) Pairing may start with 4thelectron in t2gorbitals.(ii) Pairing may start normally with 6thelectrons when t2gand egorbitals are singly filled.Q. Select incorrect match for the following complexes.a)[IrF6]3-(Δ> P)b)[Co(H2O)6]3+(Δ < P)c)Fe(CO)5(Δ > P)d)[PdCl2(SCN)2]2-(Δ > P)Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 12 tests.

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