Coordination Compounds
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Which of the following complexes are homoleptic?
A: [Co(NH3)6]3+
B: [Co(NH3)4]+
C: 4[Ni(CN)4]2-
D: [Ni(NH3)4Cl2]
Which of the following complexes are homoleptic?
A: [Co(NH3)6]3+
B: [Co(NH3)4]+
C: 4[Ni(CN)4]2-
D: [Ni(NH3)4Cl2]
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct options: A, B and C
A homoleptic complex is one that has only one species or group as a ligand.
Option A, B, and C each have only one ligand, but option D has two.
Upvote 
An aqueous pink solution of cobalt (II) chloride changes to deep blue on addition of excess of HCl. This is because____________.
A: [Co(H2O)]2+ is transformed into [CoCl6]4-
B: [Co(H2O)6]2+ is transformed into [CoCl4]2-
C: Tetrahedral complexes have smaller crystal field splitting than octahedral complexes.
D: Tetrahedral complexes have larger crystal field splitting than octahedral complex.
An aqueous pink solution of cobalt (II) chloride changes to deep blue on addition of excess of HCl. This is because____________.
A: [Co(H2O)]2+ is transformed into [CoCl6]4-
B: [Co(H2O)6]2+ is transformed into [CoCl4]2-
C: Tetrahedral complexes have smaller crystal field splitting than octahedral complexes.
D: Tetrahedral complexes have larger crystal field splitting than octahedral complex.
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: B and C
[Co (H2O)6]2+ is increased when excess of HCl is added. Tetrahedral complexes have smaller crystal field splitting than octahedral complexes because Δt = Δ0
Upvote Which of the following options are correct for [Fe(CN)6]3 - complex?
A: d2sp3 hybridisation
B: sp3d2 hybridisation
C: Paramagnetic
D: Diamagnetic
Which of the following options are correct for [Fe(CN)6]3 - complex?
A: d2sp3 hybridisation
B: sp3d2 hybridisation
C: Paramagnetic
D: Diamagnetic
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: A and C
For answer at (A) Atomic number of Iron is 26 . In ferricyanide complex, iron is in oxidation state of 3+. The orbitals on the metal atom undergoes d2sp3 hybridizaion and hence the complex has octahedral s
Upvote Atomic number of Mn, Fe, Co and Ni are 25, 26 27 and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons?
A: [MnCl6]3-
B: [FeF6]3-
C: [CoF6]3-
D: [Ni(NH3)6]2+
Atomic number of Mn, Fe, Co and Ni are 25, 26 27 and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons?
A: [MnCl6]3-
B: [FeF6]3-
C: [CoF6]3-
D: [Ni(NH3)6]2+
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: A and C
The outer octahedral complexes are weak ligands, number of pairing electrons and high spinning potential.
[MnCl6]3- - electronic configuration of Mn = 3d5,4s2. Shifting the valence electrons be
Upvote Atomic numbers of Mn, Fe, and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic?
A: [Co(NH3)6]3+
B: [Mn(CN)6]3-
C: [Fe(CN)6]4-
D: [Fe(CN)6]3-
Atomic numbers of Mn, Fe, and Co are 25, 26 and 27 respectively. Which of the following inner orbital octahedral complex ions are diamagnetic?
A: [Co(NH3)6]3+
B: [Mn(CN)6]3-
C: [Fe(CN)6]4-
D: [Fe(CN)6]3-
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: A and C
(i) Orbitals of Co3+ ion d2sp3 hybridised orbitals of Co3+ [Co (NH3)6]3+ (inner orbital or low spin complex)
No. of unpaired electron =0
Magnetic property = diamagnetic, due to absence of unpaired electrons
Upvote IUPAC name of [Pt(NH3)2Cl(NO2)] is
A: Platinum diaminechloronitrite
B: Chloronitrito-N-ammineplatinum (II)
C Diamminechloridonitrito-N-platinum (II)
D Diamminechloronitrito-N-platinate (II)
IUPAC name of [Pt(NH3)2Cl(NO2)] is
A: Platinum diaminechloronitrite
B: Chloronitrito-N-ammineplatinum (II)
C Diamminechloridonitrito-N-platinum (II)
D Diamminechloronitrito-N-platinate (II)
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: C
[Pt (NH3)2Cl (NO2)] is a neutral molecule. Ligands are arranged alphabetically.
So, NH3 Diammine, chloride and the embedded linkage is nitrogen and last is the metal name.
Upvote What kind of isomerism exists between [Cr(H2O)6]Cl3 (violet) and [Cr(H2O)5Cl]Cl2⋅H2O (greyish-green)?
A: Linkage isomerism
B: Solvate isomerism
C: Ionisation isomerism
D: Coordination isomerism
What kind of isomerism exists between [Cr(H2O)6]Cl3 (violet) and [Cr(H2O)5Cl]Cl2⋅H2O (greyish-green)?
A: Linkage isomerism
B: Solvate isomerism
C: Ionisation isomerism
D: Coordination isomerism
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: B
Hydrate isomerism is isomerism in which water is used as a solvent.
Coordination compounds with the same composition but varying ligand connectivity are known as linkage isomers.
Solvate isomerism has the same com
Upvote Which of the following species is not expected to be a ligand?
A: NO
B: NH4+
C: NH2CH2CH2NH2
D: CO
Which of the following species is not expected to be a ligand?
A: NO
B: NH4+
C: NH2CH2CH2NH2
D: CO
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: B
Ligands are neutral ions that form a coordination complex with the central metal atom.
NH4+ does not have a lone pair of electrons to give.
Upvote A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?
A: Thiosulphato
B: Oxalato
C Glycinato
D: Ethane-1,2-diamine
A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?
A: Thiosulphato
B: Oxalato
C Glycinato
D: Ethane-1,2-diamine
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: A
A chelating agent binds to a single metal ion with two or more donor atoms. Oxaloto, Glycinato, and ethane-1,2-diamine all have two donor oxygen atoms. The gland Thiosulpato is ambidentate.
Upvote The compounds [Co(SO4)(NH3)5] Brand [Co(SO4)(NH3)5]Cl represent
A: Linkage isomerism
B: Ionisation isomerism
C: Coordination isomerism
D: No isomerism
The compounds [Co(SO4)(NH3)5] Brand [Co(SO4)(NH3)5]Cl represent
A: Linkage isomerism
B: Ionisation isomerism
C: Coordination isomerism
D: No isomerism
This is a Multiple Choice Questions as classified in NCERT Exemplar
Ans: Correct option: D
Two or more compounds with the same formula but distinct structures and characteristics are known as isomers.
So, in this case compounds
[Co (SO4) (NH3)5]Br and [Co (SO4) (NH3)5]Cl show no isomerism
Upvote