Q&A Hero

Q: The element that forms a 2+ ion with the electron configuration [Xe] 4f14 5d8 is ________.

Q: Fe3+ has ________ valence electrons.

Q: Mn2+ has ________ d electrons.

Q: Copper has the anomalous short-hand electron configuration ________.

Q: Using shorthand notation, the electron configuration of Co3+ is ________.

Q: Inner transition elements are found in the ________-block of the periodic table.

Q: Transition elements are located in the ________-block of the periodic table.

Q: Which ion would you expect to have the largest crystal field splitting Δ?A) [ Rh(CN)6]4-B) [ Rh(CN)6]3-C) [ Rh(H2O)6]2+D) [ Rh(H2O)6]3+

Q: Which of the following species is diamagnetic? A) an isolated, gas-phase Cr3+ ion B) a high-spin octahedral Cr2+ complex C) an isolated, gas-phase Cu2+ ion D) a low-spin octahedral Co3+ complex

Q: Which of the following can function as a chelating agent? A) SH- B) H2O C) H2NCH2CO2- D) SCN-

Q: What is the highest possible oxidation state for manganese? A) + 2 B) + 5 C) + 6 D) + 7

Q: Which of the following species has the electron configuration [Ar]3d6? A) Cr B) Fe3+ C) Co3+ D) Ni3+

Q: How many d electrons are there in WO42-? A) 0 B) 1 C) 2 D) 3

Q: What is the ground-state electron configuration for Cr3+ (Z = 2 4)? A) [Ar] 4s2 3d7 B) [Ar] 4s2 3d1 C) [Ar] 3d3 D) [Ar] 4s1 3d2

Q: Which is the crystal field energy level diagram for a tetrahedral ML4?A) (A)B) (B)C) (C)D) (D)

Q: Which is the crystal field energy level diagram for a square planar ML4 complex that contains no ligands on the z-axis? A) (A) B) (B) C) (C) D) (D)

Q: Which is the crystal field energy level diagram for a square pyramidal ML5 complex that contains a single ligand on the z-axis? A) (A) B) (B) C) (C) D) (D)

Q: Which is the crystal field energy level diagram for an octahedral ML6 complex? A) (A) B) (B) C) (C) D) (D)

Q: The absorbance spectrum of a complex along with an artist's color wheel is shown below. Determine the color one might see for this complex. A) green B) red C) red-violet D) yellow

Q: Using the above schematic of an artist's color wheel, determine the color absorbed if a substance is seen as being green in color. A) blue B) orange C) red D) violet

Q: Using the above schematic of an artist's color wheel, determine the color seen if a substance absorbs yellow and blue light. A) green B) orange C) red D) violet

Q: Using the above schematic of an artist's color wheel, determine the color seen if a substance absorbs red and yellow light. A) blue B) green C) orange D) violet

Q: Which Pt(II) complexes are geometric isomers of each other? A) (a) and (f) B) (b) and (e) C) (c) and (d) D) (a) and (b)

Q: Which of the Co(III) complexes above are optically active? A) (A) and (B) B) (C) and (D) C) (A), (B), and (C) D) (A), (B), (C), and (D)

Q: Which of the Co(III) complexes above are enantiomers of each other? A) (A) and (B) B) (C) and (D) C) (A), (B), and (C) D) (A), (B), (C), and (D)

Q: Which complexes are enantiomers of one another? A) complexes (1) and (3) B) complexes (1) and (4) C) complexes (3) and (4) D) complexes (1), (3), and (4)

Q: Which complexes are chiral? A) complexes (1), (2), and (3) B) complexes (1), (2), and (4) C) complexes (1), (3), and (4) D) complexes (2), (3), and (4)

Q: Which exist as enantiomers? A) All exist as enantiomers. B) isomers (1) and (3) C) isomers (2) and (4) D) None exist as enantiomers.

Q: Which structures are identical? A) None of the structures are identical. B) structure (1) = structure (2) and structure (3) = structure (4) C) structure (1) = structure (3) and structure (2) = structure (4) D) structure (1) = structure (4) and structure (2) = structure (3)

Q: Which are trans-isomers? A) isomers (1) and (2) B) isomers (1) and (3) C) isomers (2) and (4) D) isomers (3) and (4)

Q: Which are cis-isomers? A) isomers (1) and (2) B) isomers (1) and (3) C) isomers (2) and (4) D) isomers (3) and (4)

Q: Which of the above are monodentate ligands? A) (a) and (c) B) (b) and (d) C) All are monodentate. D) None are monodentate.

Q: Which of the above are bidentate or tridentate ligands, capable of forming chelate rings? A) (a) and (c) B) (b) and (d) C) (a), (b), and (c) D) (a), (b), (c), and (d)

Q: Which of the above are ligands that contain two or more donor atoms? A) All contain two or more donor atoms. B) (a) and (b) C) (c) and (d) D) None contain two or more donor atoms.

Q: Which of the above are monodentate ligands? A) All are monodentate. B) (a) and (b) C) (c) and (d) D) None are monodentate.

Q: Which of the above are bidentate ligands? A) All are bidentate. B) (a) and (b) C) (c) and (d) D) None are bidentate.

Q: Which has the lowest density? A) La B) W C) Os D) Hg

Q: Which has the greatest density? A) La B) W C) Os D) Hg

Q: Which has the smallest atomic radius? A) La B) W C) Os D) Hg

Q: Which has the largest atomic radius? A) La B) W C) Os D) Hg

Q: Which has the lowest melting point? A) La B) W C) Os D) Hg

Q: Which has the highest melting point? A) La B) W C) Os D) Hg

Q: Which has the lowest density? A) Y B) Mo C) Rh D) Cd

Q: Which has the greatest density? A) Y B) Mo C) Rh D) Cd

Q: Which has the smallest atomic radius? A) Y B) Mo C) Rh D) Cd

Q: Which has the largest atomic radius? A) Y B) Mo C) Rh D) Cd

Q: Which has the lowest melting point? A) Y B) Mo C) Tc D) Cd

Q: Which has the highest melting point? A) Y B) Mo C) Tc D) Cd

Q: Which metal exhibits the highest oxidation state in its compounds? A) Sc B) Cr C) Mn D) Zn

Q: Based on the variation in Zeff, which oxoanion should be the weakest oxidizing agent? A) VO43- B) CrO42- C) MnO42- D) FeO42-

Q: Based on the variation in Zeff, which oxoanion should be the strongest oxidizing agent? A) VO43- B) CrO42- C) MnO42- D) FeO42-

Q: Based on the variation in Zeff, which M2+ ion should be the weakest reducing agent? A) Ti B) Cr C) Fe D) Zn

Q: Based on the variation in Zeff, which M2+ ion should be the strongest reducing agent? A) Ti B) Cr C) Fe D) Zn

Q: Which has the most negative standard oxidation potential? A) Sc B) V C) Cu D) Zn

Q: Which has the most positive standard oxidation potential? A) Sc B) V C) Cu D) Zn

Q: Which has the greatest density? A) Sc B) V C) Cu D) Zn

Q: Which has the smallest atomic radius? A) Sc B) V C) Ni D) Zn

Q: Which has the largest atomic radius? A) Sc B) V C) Ni D) Zn

Q: Which has the lowest melting point? A) Sc B) V C) Mn D) Zn

Q: Which has the highest melting point? A) Sc B) V C) Mn D) Zn

Q: Which is the most common ion formed by element D on the above periodic table? A) B+ B) B2+ C) B3+ D) B7+

Q: Which is the most common ion formed by element B on the above periodic table? A) B+ B) B2+ C) B3+ D) B4+

Q: Which element indicated on the above periodic table has the electron configuration [Ar] 3d10 4s1? A) element A B) element B C) element C D) element D

Q: Which element indicated on the above periodic table has the electron configuration [Ar] 3d3 4s2? A) element A B) element B C) element C D) element D

Q: Which element indicated on the above periodic table has the electron configuration [Xe] 4f7 5d1 6s2? A) element A B) element B C) element C D) element D

Q: Which element indicated on the above periodic table has the electron configuration [Kr] 4d5 5s2? A) element A B) element B C) element C D) element D

Q: Which group of elements, indicated by letter and shading on the periodic table above, represents the inner transition elements? A) A B) B C) C D) D

Q: Which group of elements, indicated by letter and shading on the periodic table above, represents the transition elements? A) A B) B C) C D) D

Q: How many unpaired electrons will Co have in the complex [CoCl4]2-? A) 1 B) 3 C) 4 D) 5

Q: Which one of the following complexes is considered to be tetrahedral? A) [FeCl4]- B) [Ni(CN)4]2- C) [PtCl4]2- D) [PdCl2(NH3)2]

Q: What statement is inconsistent with the crystal field theory of tetrahedral complexes?A) t is about 4/9 that of 0.B) Tetrahedral complexes are nearly all low spin.C) The dxy, dxz, and dyz orbitals are higher in energy than the dz and dx-yorbitals.D) None of the metal d orbitals point directly at the ligands in a tetrahedral environment.

Q: Which ion would you expect to have the largest crystal field splitting ?A) [Fe(CN)6]4-B) [Fe(CN)6]3-C) [Fe(H2O)6]2+D) [Fe(H2O)6]3+

Q: What is the crystal field energy level diagram for the complex [Co(CN)6]3-? A) (A) B) (B) C) (C) D) (D)

Q: What is the crystal field energy level diagram for the complex [Fe(H2O)6]3+? A) (A) B) (B) C) (C) D) (D)

Q: What is the expected order for increasing octahedral (Δ0) crystal field splitting for ligands? A) halides < O ligands < N ligands < CN- B) halides < CN- < O ligands < N ligands C) CN- < N ligands < O ligands < halides D) O ligands < N ligands < CN- < halides

Q: What is the expected order for increasing octahedral (Δ0) crystal field splitting for the ligands I-, F-, H2O, NH3, en, CO? A) I- < F- < H2O < NH3 < en < CO B) F- < I- < NH3 < en < CO < H2O C) I- < F- < H2O < CO < NH3 < en D) CO < en < NH3 < H2O < F- < I-

Q: For an octahedral complex what metal d orbitals are directly towards the ligands? A) dxy, dxz B) dxy, dxz, dyz C) dz, dx-y D) dz, dxz, dyz

Q: Which of the following complexes are diamagnetic? [Mn(CN)6]3- [Zn(NH3)4]2+ [Fe(CN)6]4- [FeF6]3- A) [Zn(NH3)4]2+ B) [Zn(NH3)4]2+ and [FeF6]3- C) [Zn(NH3)4]2+ and [Fe(CN)6]4- D) [Mn(CN)6]3-, [Zn(NH3)4]2+ and [Fe(CN)6]4-

Q: Which of the following complexes has five unpaired electrons? A) [Mn(H2O)6]2+ B) [Mn(CN)6]3- C) CrCl3(H2O)3 D) [Ag(NH3)2]+

Q: Which of the following complex ions is colorless? A) [Co(H2O)6]2+ B) [Mn(CN)6]3- C) [CrCl3(H2O)3] D) [Ag(NH3)2]+