General
✓✗The correct order of wavelength of light absorbed by the following Cr(III) complexes is
- [CrF6]3− > [Cr(H2O)6]3+ > [Cr(NH3)6]3+ > [Cr(CN)6]3−
- [Cr(H2O)6]3+ > [CrF6]3− > [Cr(NH3)6]3+ > [Cr(CN)6]3−
- [Cr(CN)6]3− > [Cr(NH3)6]3+ > [Cr(H2O)6]3+ > [CrF6]3−
- [CrF6]3− > [Cr(NH3)6]3+ > [Cr(H2O)6]3+ > [Cr(CN)6]3−
General
✓✗The type of isomerism exhibited by the compounds [Cr(H2O)6]Cl3, [Cr(H2O)5Cl]Cl2·H2O and [Cr(H2O)4Cl2]Cl·2H2O, and the coordination number (CN) of the central metal ion in all these compounds, are respectively
- geometrical isomerism, CN = 2
- optical isomerism, CN = 4
- ionisation isomerism, CN = 4
- solvate (hydrate) isomerism, CN = 6
General
✓✗Which one of the following is an inner orbital complex as well as diamagnetic in behaviour? (At. Nos. Zn = 30, Cr = 24, Co = 27, Ni = 28)
- [Ni(NH3)6]2+
- [Zn(NH3)6]2+
- [Cr(NH3)6]3+
- [Co(NH3)6]3+
General
✓✗An octahedral complex of the type [MA4B2] exists in
- four geometrical forms
- three geometrical forms
- two geometrical forms (cis and trans)
- one form only
General
✓✗An isomer of CrCl3·6H2O, written as [Cr(H2O)6−nCln]Cl3−n·nH2O, gives 1 mol of AgCl per mole with excess AgNO3. The value of n is
- 2
- 3
- 1
- 0
General
✓✗The geometry and magnetic nature of [Zn(NH3)4]2+ are
- tetrahedral, diamagnetic
- square planar, paramagnetic
- square planar, diamagnetic
- tetrahedral, paramagnetic
General
✓✗The correct increasing order of crystal field splitting caused by the ligands is
- NH3 < H2O < en < CN−
- H2O < en < NH3 < CN−
- H2O < NH3 < en < CN−
- CN− < en < NH3 < H2O
General
✓✗The oxidation state of cobalt in [Co(en)2(H2O)(CN)]2+ is
- +1
- +2
- +3
- +4
General
✓✗An aqueous solution of K4[Fe(CN)6] does not give the test for Fe2+ ions because
- K+ ions mask the test
- iron is present as Fe3+
- Fe is held in the complex ion [Fe(CN)6]4−, which does not dissociate
- it is a double salt
General
✓✗Statement I: EDTA forms 1 : 1 complexes with most metal ions.
Statement II: EDTA4− is a hexadentate ligand.
Statement II: EDTA4− is a hexadentate ligand.
- Both Statement I and Statement II are correct
- Both Statement I and Statement II are incorrect
- Statement I is correct but Statement II is incorrect
- Statement I is incorrect but Statement II is correct
General
✓✗The number of geometrical isomers possible for an octahedral complex of the type [MA2B2C2] is
- 6
- 3
- 4
- 5
General
✓✗0.1 mol of CrCl3·6H2O gives 0.2 mol of AgCl with excess AgNO3. The formula of the complex is
- [Cr(H2O)3Cl3]·3H2O
- [Cr(H2O)4Cl2]Cl·2H2O
- [Cr(H2O)6]Cl3
- [Cr(H2O)5Cl]Cl2·H2O
General
✓✗In valence bond terms, outer orbital and inner orbital octahedral complexes are also described respectively as
- low spin and high spin complexes
- high spin and low spin complexes
- diamagnetic and paramagnetic complexes
- tetrahedral and square planar complexes
General
✓✗Which of the following will give the maximum number of isomers?
- [Ni(C2O4)(en)2]
- [Cr(SCN)2(NH3)4]+
- [Ni(en)(NH3)4]2+
- [Co(NH3)4Cl2]
General
✓✗Which of the following complexes can show linkage isomerism?
- [Co(en)3]3+
- [Co(NH3)5Cl]2+
- [Co(NH3)6]3+
- [Co(NH3)5(SCN)]2+