The ground state electronic configuration of Zn2+ is

A) [Ar]4s23d8. B) [Ar]4s23d10. C) [Ar]4s13d9. D) [Ar]3d10. E) [Ar]3d8. A) [Ar]4s23d8. B) [Ar]4s23d10. C) [Ar]4s13d9. D) [Ar]3d10. E) [Ar]3d8.

Give the systematic name for [CoCl3(H2O)]-.

A) cobalt(II) chloride monohydrate B) aquatrichlorocobalt(II) C) aquatrichlorocobaltate(II) D) aquatrichlorocobaltite(I) E) none of the above A) cobalt(II) chloride monohydrate B) aquatrichlorocobalt(II) C) aquatrichlorocobaltate(II) D) aquatrichlorocobaltite(I) E) none of the above

A certain transition metal complex has the formula MX42+. If the metal ion has a d8 electron configuration, what is the shape of the complex?

A) octahedral B) square pyramid C) tetrahedral D) trigonal pyramid E) square planar A) octahedral B) square pyramid C) tetrahedral D) trigonal pyramid E) square planar

The crystal field splitting energy, F1F1F1S1F1F1F10,

A) is larger for tetrahedral complexes than for octahedral complexes. B) depends on the metal but not on the ligand. C) determines the color of a complex. D) is larger for ionic ligands like chloride than for molecular ligands like carbon monoxide, CO. E) determines the charge of a complex. A) is larger for tetrahedral complexes than for octahedral complexes. B) depends on the metal but not on the ligand. C) determines the color of a complex. D) is larger for ionic ligands like chloride than for molecular ligands like carbon monoxide, CO. E) determines the charge of a complex.

What is the coordination number of cobalt in the complex ion [Co(en)Cl4]-? (en = ethylenediamine)

A) 1 B) 2 C) 4 D) 6 E) 8 A) 1 B) 2 C) 4 D) 6 E) 8

Exam 23: The Transition Elements and Their Coordination Compounds

a. Explain how the crystal field theory can use the magnitude of the splitting energy to provide an explanation of the color and magnetic properties of octahedral complexes. b. In promoting an electron from the t₂_g set of orbitals to the e_g set, an octahedral complex absorbs a photon with a wavelength  of 523 nm. Calculate the value of  in the complex, in kJ/mol.

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Question 1

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a. The energy needed for a photon to excite an electron from the lower to the higher set of the split d orbitals, will increase as  increases. This will mean the complex absorbs at shorter wavelengths, influencing its color. Also, a large splitting energy  will tend to produce low-spin complexes.
b. 229 kJ/mol

a. How many unpaired 3d electrons will there be in (i) high and (ii) low-spin complexes of Co(II)? b. How can high and low-spin complexes be recognized and distinguished experimentally?

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a. (i) high-spin, 3 unpaired electrons
(ii) low-spin, 1 unpaired electron
b. Unpaired electrons interact strongly with a magnetic field, and this property is used to determine the number of such electrons in a complex.

Consider the following octahedral complex structures, each involving ethylene diamine and two different, unidentate ligands X and Y. Which one, if any, of the following is a pair of optical isomers?

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Which of the oxidation states of chromium has the largest valence-state electronegativity?

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Question 4

The ground state electronic configuration of Zn²⁺ is

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Question 5

How many unpaired electrons will there be in a high-spin octahedral complex of Fe(II)?

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Question 6

Which one of the following normally acts as a bidentate ligand in complexes with transition metal ions?

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Question 7

Which of the following species could exist as isomers?

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Question 8

What is the highest possible oxidation state for palladium, Pd?

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Question 9

When the ethylenediaminetetraacetate ion (EDTA^4-) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

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Question 10

Chromium and manganese are among the transition elements that form several different oxides. Which of the following statements characterize these oxides?

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Question 11

Give the systematic name for [CoCl₃(H₂O)]^-.

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Question 12

Which of the following ligands could participate in linkage isomerism?

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Question 13

A certain transition metal complex has the formula MX₄²⁺. If the metal ion has a d⁸ electron configuration, what is the shape of the complex?

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Question 14

In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III)will be

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Question 15

A feature of transition metal chemistry is that these elements exhibit multiple oxidation states. Which one of the following elements exhibits the smallest number of different oxidation states?

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Question 16

The crystal field splitting energy, ,

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Question 17

What is the coordination number of cobalt in the complex ion [Co(en)Cl₄]^-? (en = ethylenediamine)

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Question 18

Consider the following octahedral complex structures, each involving ethylene diamine and two different, unidentate ligands X and Y. Which one of the following statements about these structures is incorrect?

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Question 19

Which of the following ions is least likely to form colored compounds?

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Question 20

Showing 1 - 20 of 92

Exam 23: The Transition Elements and Their Coordination Compounds

a. How many unpaired 3d electrons will there be in (i) high and (ii) low-spin complexes of Co(II)? b. How can high and low-spin complexes be recognized and distinguished experimentally?

Consider the following octahedral complex structures, each involving ethylene diamine and two different, unidentate ligands X and Y. Which one, if any, of the following is a pair of optical isomers?

Which of the oxidation states of chromium has the largest valence-state electronegativity?

The ground state electronic configuration of Zn2+ is

How many unpaired electrons will there be in a high-spin octahedral complex of Fe(II)?

Which one of the following normally acts as a bidentate ligand in complexes with transition metal ions?

Which of the following species could exist as isomers?

What is the highest possible oxidation state for palladium, Pd?

When the ethylenediaminetetraacetate ion (EDTA4-) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

Chromium and manganese are among the transition elements that form several different oxides. Which of the following statements characterize these oxides?

Give the systematic name for [CoCl3(H2O)]-.

Which of the following ligands could participate in linkage isomerism?

A certain transition metal complex has the formula MX42+. If the metal ion has a d8 electron configuration, what is the shape of the complex?

In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III) will be

A feature of transition metal chemistry is that these elements exhibit multiple oxidation states. Which one of the following elements exhibits the smallest number of different oxidation states?

The crystal field splitting energy, ,

What is the coordination number of cobalt in the complex ion [Co(en)Cl4]-? (en = ethylenediamine)

Consider the following octahedral complex structures, each involving ethylene diamine and two different, unidentate ligands X and Y. Which one of the following statements about these structures is incorrect?

Which of the following ions is least likely to form colored compounds?

Keys to the Study of Chemistry

The Components of Matter

Stoichiometry of Formulas and Equations

The Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry: Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces: Liquids, Solids, and Phase Changes

The Properties of Mixtures: Solutions and Colloids

Periodic Patterns in the Main Group Elements: Bonding, Structure, and Reactivity

Organic Compounds and the Atomic Properties of Carbon

Kinetics: Rates and Mechanisms of Chemical Reactions

Equilibrium: the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics: Entropy, Free Energy, and the Direction of Chemical Reactions

Electrochemistry: Chemical Change and Electrical Work

The Elements in Nature and Industry

Nuclear Reactions and Their Applications

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The ground state electronic configuration of Zn²⁺ is

When the ethylenediaminetetraacetate ion (EDTA^4-) forms a complex with a transition metal ion, how many electrons does it normally donate to the metal?

Give the systematic name for [CoCl₃(H₂O)]^-.

A certain transition metal complex has the formula MX₄²⁺. If the metal ion has a d⁸ electron configuration, what is the shape of the complex?

In the presence of a strong octahedral ligand field, the number of unpaired electrons in Co(III)will be

What is the coordination number of cobalt in the complex ion [Co(en)Cl₄]^-? (en = ethylenediamine)