General
✓✗The correct order of the stoichiometries of AgCl formed when AgNO3 in excess is treated with the complexes CoCl3·6NH3, CoCl3·5NH3 and CoCl3·4NH3 respectively is
- 1AgCl, 3AgCl, 2AgCl
- 3AgCl, 1AgCl, 2AgCl
- 3AgCl, 2AgCl, 1AgCl
- 2AgCl, 3AgCl, 2AgCl
General
✓✗The order of energy absorbed, which is responsible for the colour of the complexes
(A) [Ni(H2O)2(en)2]2+, (B) [Ni(H2O)4(en)]2+ and (C) [Ni(en)3]2+, is
(A) [Ni(H2O)2(en)2]2+, (B) [Ni(H2O)4(en)]2+ and (C) [Ni(en)3]2+, is
- (A) > (B) > (C)
- (B) > (A) > (C)
- (C) > (B) > (A)
- (C) > (A) > (B)
General
✓✗The IUPAC name of K2[Zn(OH)4] is
- potassium zinc(II) hydroxide
- potassium tetrahydroxidozincate(II)
- tetrahydroxidozinc(II) potassium
- potassium tetrahydroxozinc(II)
General
✓✗A shortcoming of crystal field theory is that
- anionic ligands such as halides are found at the weak end of the spectrochemical series, although point charges should give the largest splitting
- it cannot explain magnetic properties
- it predicts no splitting of d orbitals
- it cannot explain colour
General
✓✗The structures of [Mn2(CO)10] and [Co2(CO)8] both have
A. a metal−metal linkage
B. terminal CO groups
C. bridging CO groups
D. the metal in the zero oxidation state
Choose the correct answer from the options given below.
A. a metal−metal linkage
B. terminal CO groups
C. bridging CO groups
D. the metal in the zero oxidation state
Choose the correct answer from the options given below.
- A, B and D only
- A, C and D only
- A, B and C only
- B, C and D only
General
✓✗The formula of dichloridobis(ethane-1,2-diamine)platinum(IV) nitrate is
- [PtCl2(en)](NO3)2
- [PtCl2(en)2]NO3
- [Pt(en)2](NO3)2Cl2
- [PtCl2(en)2](NO3)2
General
✓✗The formula of tris(ethane-1,2-diamine)chromium(III) hexacyanidoferrate(III) is
- [Cr(en)3][Fe(CN)6]
- [Cr(en)3]3[Fe(CN)6]
- [Fe(en)3][Cr(CN)6]
- [Cr(en)3][Fe(CN)6]3
General
✓✗Coordination isomerism is possible only in compounds in which
- the ligand is ambidentate
- both the cation and the anion are complex ions
- only the cation is a complex ion
- only the anion is a complex ion
General
✓✗Which of the following is not an ambidentate ligand?
- CN−
- SCN−
- NO2−
- C2O42−
General
✓✗Which of the following is a coordination isomer of [Co(NH3)6][Cr(CN)6]?
- [Co(NH3)5Cl][Cr(CN)6]
- [Cr(NH3)6][Co(CN)6]
- [Co(NH3)6][Cr(NC)6]
- [Co(en)3][Cr(CN)6]
General
✓✗In the IUPAC name of a complex, the thiocyanate ion bonded to the metal through nitrogen is called
- thiocyanato-N
- cyanato-N
- isothiocyanide
- thiocyanato-S
General
✓✗Which statement about K4[Fe(CN)6] and FeSO4·(NH4)2SO4·6H2O is correct?
- Both give the test for Fe2+ ions
- Only the second gives a positive test for Fe2+ ions in water
- Neither contains iron in the +2 state
- Only the first gives the test for Fe2+ ions
General
✓✗The number of unpaired electrons in the low spin complex [Mn(CN)6]4− is
- 0
- 3
- 5
- 1
General
✓✗For tetrahedral [CoCl4]2−, Δt is about 3300 cm−1. Using Δt ≈ (4/9)Δo, the splitting expected for an octahedral Co(II) chloride complex with the same metal−ligand distance is about
- 3300 cm−1
- 7400 cm−1
- 1470 cm−1
- 13200 cm−1
General
✓✗Which of the following has a spin-only magnetic moment of 5.92 BM?
- [Fe(CN)6]4−
- [Mn(H2O)6]2+
- [Cu(H2O)4]2+
- [Cr(H2O)6]3+