6.Correct Answer: [NiBra];square planar 7.Correct Answer The Cr-Cr bond distance is approximately equal to twice the metallic radius of Cr 8.Correct Answer: CrFs;trigonal bipyramidal molecules 9.Correct Answer Mn(III):n=3 10.Your Answer: Ti(NO3)4;CN=4 11.Correct Answer 62π482 12.Correct Answer: [FeO- 13.Correct Answer: [Fe(en) 14.Correct Answer: Coions occupy tetrahedral sites,and low-spin Cooccupy octahedral sites 15.Correct Answer: Square-planar Ni(II)complexes are paramagnetic 16.Correct Answer: is called fluorescence 17.Correct Answer: Cu2O+H2SO-CuSO4+Cu+H=O 18.Correct Answer pale pink to dark blue 19.Correct Answer: [Mn(OH2)+ 20.Correct Answer: Hydrogen-bonded pairs of ligands around square planar Ni(ID)the red complex has
6.Correct Answer: [NiBr4] 2–; square planar 7.Correct Answer: The Cr–Cr bond distance is approximately equal to twice the metallic radius of Cr 8.Correct Answer: CrF5; trigonal bipyramidal molecules 9.Correct Answer: Mn(III); n = 3 10.Your Answer: Ti(NO3)4; CN = 4 11.Correct Answer: σ 2 π 4 δ2 12.Correct Answer: [FeO4] 2– 13.Correct Answer: [Fe(en)3] 2+ 14.Correct Answer: Co2+ ions occupy tetrahedral sites, and low-spin Co3+ occupy octahedral sites 15.Correct Answer: Square-planar Ni(II) complexes are paramagnetic 16.Correct Answer: is called fluorescence 17.Correct Answer: Cu2O + H2SO4 → CuSO4 + Cu + H=O 18.Correct Answer: pale pink to dark blue 19.Correct Answer: [Mn(OH2)6] 3+ 20.Correct Answer: Hydrogen-bonded pairs of ligands around square planar Ni(II); the red complex has 6
a low solubility in water Part 2 The second and third row d-block elements (1)Which statement is incorrect about the second and third row d-block metals? A)The highest melting metals in the two rows are,respectively,Mo and W B)Each pair of metals in a group (e.g.Nb and Ta,or Rh and Ir)possess approximately the same metallic radius C)Enthalpies of atomization are lowest for the group 10 metals D)Technetium is a man-made element (2)Match the solid state structural description to the compound.Which pair is correct? A)Tals;dimer with octahedral Ta B)NbFs,monomeric with trigonal bipyramidal Nb C)MoCl discrete hexameric molecules D)RhFs;chain structure with octahedral Rh ()Which statement is incorrect? A)HTcO and HReO4 are strong acids in aqueous solution B)HTcO and HReO4 can be isolated as crystalline solids C)Tc2Oand Re2O have molecular struetures in the solid state D)Re2Os is unstable with respect to disproportionation (4)Which statement is correct? A)At 305 K.Hg is the only liquid metal in the periodic table B)The highest oxidation state attained by Os is+8 C)The chemistries of Hg and Cd are dominated by the+1 and+2 oxidation states D)The ground state electronic configurations of Ru and Os are(n+1)s2nd6 where n =40r5
a low solubility in water Part 2 The second and third row d-block elements (1) Which statement is incorrect about the second and third row d-block metals? A) The highest melting metals in the two rows are, respectively, Mo and W B) Each pair of metals in a group (e.g. Nb and Ta, or Rh and Ir) possess approximately the same metallic radius C) Enthalpies of atomization are lowest for the group 10 metals D) Technetium is a man-made element (2) Match the solid state structural description to the compound. Which pair is correct? A) TaI5; dimer with octahedral Ta B) NbF5; monomeric with trigonal bipyramidal Nb C) MoCl2; discrete hexameric molecules D) RhF5; chain structure with octahedral Rh (3) Which statement is incorrect? A) HTcO4 and HReO4 are strong acids in aqueous solution B) HTcO4 and HReO4 can be isolated as crystalline solids C) Tc2O7 and Re2O7 have molecular structures in the solid state D) Re2O5 is unstable with respect to disproportionation (4) Which statement is correct? A) At 305 K, Hg is the only liquid metal in the periodic table B) The highest oxidation state attained by Os is +8 C) The chemistries of Hg and Cd are dominated by the +1 and +2 oxidation states D) The ground state electronic configurations of Ru and Os are (n+1)s2nd6 where n = 4 or 5 7
(5)Which statement gives the best description of NbCl4? A)A crystalline solid at 298 K consisting of dimers B)A solid that contains tetramers with 5-coordinate Nbatoms C)A solid containing chains in which the Nb atoms are approximately octahedrally coordinated D)A diamagnetic solid with a 3-dimensional structure (6)Which statement is incorrect about [RuzOClo? A)It is paramagnetic B)It contains a linear Ru-O-Ru bridge C)There is an eclipsed conformation of Cl ligands D)Each Ru(IV)is 6-coordinate (7)Match the M-M bond orders to the species given.Which pair is incorrect? A)[Re2Cis]-;Re-Re bond order=4 B)[W2Cl];W-W bond order=3 C)[Mo2Cls];Mo-Mo bond order =4 D)[Os2CIs]-;Os-Os bond order=4 (8)Match the metal to its highest oxidation state.Which pair is incorrect? A)Re;+7 B)Os;+8 C)Ir,+7 D)Pt:+6 (9)Which simple aqua ion is well characterized? A)[Zr(OH2)] B)[Tc(OH2)6] C)[Ru(OH2)] D)[Os(OH2)]
(5) Which statement gives the best description of NbCl4? A) A crystalline solid at 298 K consisting of dimers B) A solid that contains tetramers with 5-coordinate Nb atoms C) A solid containing chains in which the Nb atoms are approximately octahedrally coordinated D) A diamagnetic solid with a 3-dimensional structure (6) Which statement is incorrect about [Ru2OCl10] 4–? A) It is paramagnetic B) It contains a linear Ru–O–Ru bridge C) There is an eclipsed conformation of Cl ligands D) Each Ru(IV) is 6-coordinate (7) Match the M–M bond orders to the species given. Which pair is incorrect? A) [Re2Cl8] 2–; Re–Re bond order = 4 B) [W2Cl9] 3–; W–W bond order = 3 C) [Mo2Cl8] 4–; Mo–Mo bond order = 4 D) [Os2Cl8] 2–; Os–Os bond order = 4 (8) Match the metal to its highest oxidation state. Which pair is incorrect? A) Re; +7 B) Os; +8 C) Ir; +7 D) Pt; +6 (9) Which simple aqua ion is well characterized? A) [Zr(OH2)6] 4+ B) [Tc(OH2)6] 3+ C) [Ru(OH2)6] 3+ D) [Os(OH2)6] 3+ 8
(10)Match the metal coordination geometry to the complex.Which pair is incorrect? A)[PdCl square planar B)[AuC tetrahedral C)[PtCl2;octahedral D)[Nb2Fu;octahedral (11)Which statement is correct? A)AgPtFs is an example of an Ag(II)-containing compound B)Ag(II)is a common oxidation state for silver C)The highest oxidation state of Au is+3 D)In complexes,the usual coordination environment of gold(I)is octahedral (12)Which statement is incorrect? A)The use of Cd compounds in batteries is increasing significantly B)WO;is used in electrochormic windows C)Mo is used in toughened steels D)Rh,Pt and Pd are used in catalytic converters (13)Which statement is incorrect about [Mo6O? A)The structure of [MoOcontains Mo-Mo single bonds B)[MoOis isostructural with [NbO C)In [Mo,each Mo centre is approximately octahedrally sited D)The structure of[MosO1g2-contains terminal,μ2.andμ°-O atoms (14)The reaction of [oxalate ion(ethanedioate)is likely to give: A)lr(ox]产 B)[Ir(ox)3] C)[Ir(ox) D)[Ir(ox)]
(10) Match the metal coordination geometry to the complex. Which pair is incorrect? A) [PdCl4] 2–; square planar B) [AuCl4] – ; tetrahedral C) [PtCl6] 2–; octahedral D) [Nb2F11] – ; octahedral (11) Which statement is correct? A) AgPtF6 is an example of an Ag(II)-containing compound B) Ag(II) is a common oxidation state for silver C) The highest oxidation state of Au is +3 D) In complexes, the usual coordination environment of gold(I) is octahedral (12) Which statement is incorrect? A) The use of Cd compounds in batteries is increasing significantly B) WO3 is used in electrochormic windows C) Mo is used in toughened steels D) Rh, Pt and Pd are used in catalytic converters (13) Which statement is incorrect about [Mo6O19] 2–? A) The structure of [Mo6O19] 2– contains Mo–Mo single bonds B) [Mo6O19] 2– is isostructural with [Nb6O19] 8– C) In [Mo6O19] 2–, each Mo centre is approximately octahedrally sited D) The structure of [Mo6O19] 2– contains terminal, μ 2 - and μ6 -O atoms (14) The reaction of [IrCl6] 3– with oxalate ion (ethanedioate) is likely to give: A) [Ir(ox)3] 3– B) [Ir(ox)3] C) [Ir(ox)2] – D) [Ir(ox)6] 3– 9