PYQSide ExamsMy practice

Coordination Compounds · Question 37

NEET 2016 (Phase 2)MCQMedium📈 Topic in 12% papers+4−1
1

The correct increasing order of trans-effect of the following species is

  1. NH3 > CN- > Br- > C6H5-
  2. CN- > C6H5- > Br- > NH3
  3. Br- > CN- > NH3 > C6H5-
  4. CN- > Br- > C6H5- > NH3

Answer

(2) CN- > C6H5- > Br- > NH3

Solution

Trans-effect is the ability of a ligand to labilise (direct substitution at) the position trans to itself in square planar complexes.

Strong π-acceptors (CN-) show the largest trans-effect, followed by strong σ-donors (C6H5-); halides are weaker, and NH3 is among the weakest.

Trans-effect series: CN- > C6H5- > Br- > NH3

i.e. in increasing order: NH3 < Br- < C6H5- < CN-

Answer: (2)

NEET 2016 (Phase 2)

Keep practising — Coordination Compounds

2

Jahn-Teller effect is not observed in high spin complexes of

  1. d7
  2. d8
  3. d4
  4. d9
NEET 2016 (Phase 2)
3

The hybridization involved in complex [Ni(CN)4]2- is (At. No. Ni = 28)

  1. sp3
  2. d2sp2
  3. d2sp3
  4. dsp2
AIPMT 2015
4

The name of complex ion, [Fe(CN)6]3- is

  1. hexacyanitoferrate (III) ion
  2. tricyanoferrate (III) ion
  3. hexacyanidoferrate (III) ion
  4. hexacyanoiron (III) ion.
AIPMT 2015
5

The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where en is ethylenediamine) is

  1. 6
  2. 7
  3. 8
  4. 9
AIPMT 2015
6

Number of possible isomers for the complex [Co(en)2Cl2]Cl will be (en = ethylenediamine)

  1. 1
  2. 3
  3. 4
  4. 2
AIPMT 2015
7

Cobalt (III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25 ?

  1. CoCl3 5NH3
  2. CoCl3 6NH3
  3. CoCl3 3NH3
  4. CoCl3 4NH3
AIPMT 2015 (Cancelled)
8

Which of these statements about [Co(CN)6]3- is true?

  1. [Co(CN)6]3- has four unpaired electrons and will be in a high-spin configuration.
  2. [Co(CN)6]3- has no unpaired electrons and will be in a high-spin configuration.
  3. [Co(CN)6]3- has no unpaired electrons and will be in a low-spin configuration.
  4. [Co(CN)6]3- has four unpaired electrons and will be in a low-spin configuration.
AIPMT 2015 (Cancelled)
9

Among the following complexes the one which shows zero crystal field stabilization energy (CFSE) is

  1. [Mn(H2O)6]3+
  2. [Fe(H2O)6]3+
  3. [Co(H2O)6]2+
  4. [Co(H2O)6]3+
AIPMT 2014
10

Which of the following complexes is used as an anticancer agent?

  1. mer-[Co(NH3)3Cl3]
  2. cis-[PtCl2(NH3)2]
  3. cis-K2[PtCl2Br2]
  4. Na2CoCl4
AIPMT 2014
11

A magnetic moment of 1.73 BM will be shown by one among the following

  1. TiCl4
  2. [CoCl6]4-
  3. [Cu(NH3)4]2+
  4. [Ni(CN)4]2-
NEET 2013

All Coordination Compounds PYQs →

PDFDownload Coordination Compounds PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Chemistry chapters
Physical ChemistrySome Basic Concepts of ChemistryStructure of AtomStates of MatterThermodynamicsEquilibriumRedox ReactionsSolid StateSolutionsElectrochemistryChemical KineticsSurface Chemistry
Inorganic ChemistryClassification of Elements and Periodicity in PropertiesChemical Bonding and Molecular StructureHydrogens-Block Elementsp-Block Elements (Group 13 & 14)Environmental ChemistryGeneral Principles of Isolation of Elementsp-Block Elements (Group 15–18)d- and f-Block ElementsCoordination Compounds
Organic ChemistryOrganic Chemistry – Some Basic Principles and TechniquesIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomoleculesPolymersChemistry in Everyday LifePrinciples Related to Practical Chemistry