Chemistry
3rd Edition
ISBN: 9780073402734
Author: Julia Burdge
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 7, Problem 124AP
Use your knowledge of thermochemistry to calculate the
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Which of the following reactions represents an electron gain energy that would be positive (i.e. endothermic).
O(g) → O+(g) + e-
Ne(g) + e- → Ne-(g)
O(g) + e- → O-(g)
I(g) → I+(g) + e-
I(g) + e- → I-(g)
Ne(g) → Ne+(g)+ e-
fast plz
The following equations represent the chemical process to determine electron affinity of atoms. Identify the process expected to be the most exothermic (that releases the most energy).
(A) F(g) + e– --> F– (g);
(B) Cl(g) + e– --> Cl–(g);
(C) Br(g) + e– --> Br–(g) ;
(D) I(g) + e– --> I–(g);
Which of the following reactions represents an electron gain energy that would be positive (i.e. endothermic).
S(g) → S+(g) + e-
Cl(g) → Cl+(g) + e-
Kr(g) + e- → Kr-(g)
S(g) + e- → S-(g)
Kr(g) → Kr+(g)+ e-
Cl(g) + e- →Cl-(g)
Chapter 7 Solutions
Chemistry
Ch. 7.1 - Practice Problem ATTEMPT What element(s) would you...Ch. 7.1 - Practice Problem BUILD
Arrange the following...Ch. 7.1 - Practice ProblemCONCEPTUALIZE Three different...Ch. 7.1 - 7.1.1 Which of the following elements would you...Ch. 7.1 - Prob. 2CPCh. 7.1 - Prob. 3CPCh. 7.2 - Practice Problem ATTEMPT Without using a periodic...Ch. 7.2 - Practice ProblemBUILD Identify the elements...Ch. 7.2 - Prob. 1PPCCh. 7.2 - 7.2.1 Which electron configuration is correct for...
Ch. 7.2 - Which of the following equations correctly...Ch. 7.3 - Practice Problem ATTEMPT Referring only to a...Ch. 7.3 - Practice Problem BUILD
For which of the following...Ch. 7.3 - Practice Problem CONCEPTUALIZE
Based on size and...Ch. 7.4 - Practice Problem ATTEMPT Which element. Mg or Al,...Ch. 7.4 - Prob. 1PPBCh. 7.4 - Practice ProblemCONCEPTUALIZE Imagine an...Ch. 7.4 - 7.4.1 Arrange the elements in order of increasing...Ch. 7.4 - Arrange the elements Li. Be. and B in order of...Ch. 7.4 - For each of the following pairs of elements,...Ch. 7.4 - Prob. 4CPCh. 7.5 - Practice ProblemATTEMPT Would you expect Mg or Al...Ch. 7.5 - Prob. 1PPBCh. 7.5 - Practice ProblemCONCEPTUALIZE In the same...Ch. 7.5 - Prob. 1CPCh. 7.5 - 7.5.2 Which of the following pairs are...Ch. 7.5 - 7.5.3 Select the correct ground-state electron...Ch. 7.5 - Prob. 4CPCh. 7.6 - Practice Problem ATTEMPT Between which two charges...Ch. 7.6 - Practice ProblemBUILD What must the distance be...Ch. 7.6 - Prob. 1PPCCh. 7.6 - Which of the following species are isoelectronic...Ch. 7.6 - Which of the following are arranged correctly in...Ch. 7.6 - 7.6.3 Which of the following is the most realistic...Ch. 7.6 - Which of the following is the most realistic...Ch. 7.7 - Practice Problem ATTEMPT Write electron...Ch. 7.7 - Practice ProblemBUILD List all the species (atoms...Ch. 7.7 - Practice Problem CONCEPTUALIZE
Select the correct...Ch. 7.8 - Practice Problem ATTEMPT
Write electron...Ch. 7.8 - Practice Problem BUILD
What common d-block ion...Ch. 7.8 - Prob. 1PPCCh. 7.9 - Practice ProblemATTEMPT Arrange the following...Ch. 7.9 - Practice Problem BUILD
List all the common ions...Ch. 7.9 - Practice ProblemCONCEPTUALIZE Which periodic...Ch. 7 - Often we can compare properties of two elements...Ch. 7 - 7.2
The colored spheres represent the ions Based...Ch. 7 - Group 8A exhibits the highest first ionization...Ch. 7 - Which of the following best describes why Z eff...Ch. 7 - 7.1 Briefly describe the significance of...Ch. 7 - What is Moseley's contribution to the modern...Ch. 7 - 7.3 Describe the general layout of a modern...Ch. 7 - 7.4 What is the most important relationship among...Ch. 7 - Prob. 5QPCh. 7 - Prob. 6QPCh. 7 - Prob. 7QPCh. 7 - 7.8 What is a main group element? Give names and...Ch. 7 - 7.9 Without referring to a periodic table, write...Ch. 7 - Prob. 10QPCh. 7 - You are given a sample of a dark, shiny solid and...Ch. 7 - What are valence electrons? For main group...Ch. 7 - Write the outer electron configurations for the...Ch. 7 - Use the first-row transition metals ( Sc to Cu )...Ch. 7 - Arsenic is not an essential element for the human...Ch. 7 - 7.16 In the periodic table, the element hydrogen...Ch. 7 - 7.17 A neutral atom of a certain element has 34...Ch. 7 - 7.18 Group the following electron configurations...Ch. 7 - Group the following electron configurations in...Ch. 7 - Prob. 20QPCh. 7 - Specify the group of the periodic table in which...Ch. 7 - Prob. 22QPCh. 7 - Explain why the atomic radius of Be is smaller...Ch. 7 - The electron configuration of B is 1 S 2 2 S 2 2 P...Ch. 7 - 7 25 The electron configuration of C is . (a) If...Ch. 7 - Define atomic radius. Does the size of an atom...Ch. 7 - How does atomic radius change (a) from left to...Ch. 7 - Prob. 28QPCh. 7 - Sketch the outline of the periodic table, and show...Ch. 7 - Prob. 30QPCh. 7 - Explain the trends in electron affinity from...Ch. 7 - A hydrogen-like ion is an ion containing only one...Ch. 7 - Prob. 33QPCh. 7 - On the basis of their positions in the periodic...Ch. 7 - 7.35 Arrange the following atoms in order of...Ch. 7 - 7.36 Which is the largest atom in the third period...Ch. 7 - Which is the smallest atom in Group 7A ?Ch. 7 - Based on size, identify the spheres shown as Na,...Ch. 7 - Based on size, identify the spheres shown as K,...Ch. 7 - Why is the radius of the lithium atom considerably...Ch. 7 - Use the second period of the periodic table as an...Ch. 7 - Arrange the following in order of increasing first...Ch. 7 - Arrange the following in order of increasing first...Ch. 7 - 7.44 Use the third period of the periodic table as...Ch. 7 - In general, the first ionization energy increases...Ch. 7 - Prob. 46QPCh. 7 - 7.47 Two atoms have the electron configurations ....Ch. 7 - Prob. 48QPCh. 7 - Specify which of the following elements you would...Ch. 7 - Considering their electron affinities, do you...Ch. 7 - Explain why alkali metals have a greater affinity...Ch. 7 - 7.52 How does the electron configuration of ions...Ch. 7 - 7.53 What do we mean when we say that two ions or...Ch. 7 - Prob. 54QPCh. 7 - Give three examples of first-row transition metal...Ch. 7 - A M 2+ ion derived from a metal in the first...Ch. 7 - A metal ion with a net +3 charge has five...Ch. 7 - Prob. 58QPCh. 7 - 7.59 Group the species that are isoelectronic: .
Ch. 7 - 7.60 Write the ground-state electron...Ch. 7 - Prob. 61QPCh. 7 - 7.62 Which of the following species are...Ch. 7 - Prob. 63QPCh. 7 - Prob. 64QPCh. 7 - Indicate which one of the two species in each of...Ch. 7 - Prob. 66QPCh. 7 - Prob. 67QPCh. 7 - Prob. 68QPCh. 7 - Prob. 69QPCh. 7 - Prob. 70QPCh. 7 - Prob. 71QPCh. 7 - Prob. 72QPCh. 7 - Prob. 73QPCh. 7 - Prob. 74QPCh. 7 - Prob. 75QPCh. 7 - Prob. 76QPCh. 7 - Prob. 77QPCh. 7 - Prob. 78QPCh. 7 - 7 79 Write balanced equations for the reactions...Ch. 7 - Write formulas for and name the binary hydrogen...Ch. 7 - Prob. 81QPCh. 7 - Prob. 82APCh. 7 - Prob. 83APCh. 7 - Write equations representing the following...Ch. 7 - Prob. 85APCh. 7 - Write the empirical (or molecular) formulas of...Ch. 7 - 7.87 Arrange the following species in...Ch. 7 - In which of the following are the species written...Ch. 7 - Which of the following properties show a clear...Ch. 7 - Prob. 90APCh. 7 - Prob. 91APCh. 7 - 7.92 For each pair of elements listed, give three...Ch. 7 - Prob. 93APCh. 7 - Explain why the first electron affinity of sulfur...Ch. 7 - Prob. 95APCh. 7 - 7.96 Predict the products of the following oxides...Ch. 7 - 7.97 write the formulas and names of the oxides of...Ch. 7 - Prob. 98APCh. 7 - The formula for calculating the energies of an...Ch. 7 - 7.100 Why do noble gases have negative electron...Ch. 7 - 7.101 The atomic radius of K is 227 pm and that of...Ch. 7 - 7.102 The atomic radius of F is 72 pm and that of ...Ch. 7 - Match each of the elements on the right with its...Ch. 7 - Prob. 104APCh. 7 - Prob. 105APCh. 7 - Prob. 106APCh. 7 - Prob. 107APCh. 7 - Explain, in terms of their electron...Ch. 7 - 7.109 Write the formulas and names of the hydrides...Ch. 7 - Prob. 110APCh. 7 - Prob. 111APCh. 7 - Prob. 112APCh. 7 - Most transition metal ions are colored. For...Ch. 7 - Prob. 114APCh. 7 - Prob. 115APCh. 7 - Prob. 116APCh. 7 - 7.117 Although it is possible to determine the...Ch. 7 - Prob. 118APCh. 7 - Prob. 119APCh. 7 - Predict the atomic number and ground-state...Ch. 7 - Prob. 121APCh. 7 - 7.122 Match each of the elements on the right with...Ch. 7 - One way to estimate the effective charge ( Z eff )...Ch. 7 - Use your knowledge of thermochemistry to calculate...Ch. 7 - Prob. 125APCh. 7 - 7.126 On one graph, plot the effective nuclear...Ch. 7 - 7.127 One allotropic form of an element X is a...Ch. 7 - 7.128 Calculate the maximum wavelength of light...Ch. 7 - Prob. 129APCh. 7 - Element M is a shiny and highly reactive metal (...Ch. 7 - Write the ground-state electron configurations of...Ch. 7 - Thallium (Tl) is a neurotoxin and exists mostly in...Ch. 7 - Both Mg 2+ and Ca 2+ are important biological...Ch. 7 - Prob. 134APCh. 7 - Prob. 135APCh. 7 - Prob. 136APCh. 7 - Prob. 137APCh. 7 - 7.138 The ionization energy of a certain element...Ch. 7 - 7.139 Experimentally, the electron affinity of an...Ch. 7 - A halogen has valence electrons in which orbitals?...Ch. 7 - Prob. 2SEPPCh. 7 - Prob. 3SEPPCh. 7 - Prob. 4SEPP
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- What is the electron configuration of the Ba3+ ion? Suggest a reason why this ion is not normally found in nature.arrow_forwardBoron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively. (a) In what ways do the two isotopes differ from each other? Does the electronic configuration of 10B differ from that of 11B? (b) Draw the orbital diagram for an atom of 11B. Which electrons are the valence electrons? (c) Indicate three ways in which the 1s electrons in boron differ from its 2s electrons. (d) Elemental boron reacts with fluorine to form BF3, a gas. Write a balanced chemical equation for the reaction of solid boron with fluorine gas. (e) ΔHf° for BF3(g) is -1135.6 kj/mol. Calculate the standard enthalpy change in the reaction of boron with fluorine. (f) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?arrow_forwardUsing the following data, draw the Born Haber cycle for the formation of hypothetical compound of MX(s) from its elements. Using the Born Haber cycle, calculate the electron affinity of X. M (s) → M (g) ∆Hº = 77 kJ mol-1M (g) → M+ (g) + e- ∆Hº = 433 kJ mol-1X2 (g) → 2X (g) ∆Hº = 129 kJ mol-1M (s) + ½ X2(g) → MX(s) ∆Hº = -530 kJ mol-1M+ (g) + X-(g) → MX (s) ∆Hº = -760 kJ mol-1arrow_forward
- Boron, atomic number 5, occurs naturally as two isotopes, 10B and 11B, with natural abundances of 19.9% and 80.1%, respectively.(a) In what ways do the two isotopes differ from each other? Does the electronic configuration of 10B differ from that of 11B? (b) Drawthe orbital diagram for an atom of 11B. Which electrons are the valence electrons? (c) Indicate three ways in which the 1s electrons inboron differ from its 2s electrons. (d) Elemental boron reacts with fluorine to form BF3, a gas. Write a balanced chemical equation forthe reaction of solid boron with fluorine gas. (e) ΔHf° for BF31g2 is -1135.6 kJ>mol. Calculate the standard enthalpy change in thereaction of boron with fluorine. (f) Will the mass percentage of F be the same in 10BF3 and 11BF3? If not, why is that the case?arrow_forward(i) Write the equation that represents the first electron affinity of Selenium (Se). (ii) Do you expect this process to be exothermic or endothermic? Explain your answer.arrow_forward1. Arrange the atoms according to both decreasing atomic radius and increasing first ionization energy (IE): Ca, Cl, Ga, P, and S 2. Select the statement(s) that explain(s) the relationship between the arrangement of elements by size and first ionization energy. (a). The two arrangements are the same because IE of elements increases from left to right and the radii of elements decreases from left to right. b). The first set of paired electrons in a p subshell experience a large amount of electron-electron repulsion, making the fourth electron in a p subshell easy to remove. c). A full s subshell is able to shield a newly filled p subshell from the nucleus, making the first electron in a p subshell easy to remove. d). A p subshell with only one unpaired electron is extremely stable, making the fifth electron in a p subshell easy to remove. e). The third unpaired electron in a p subshell causes a lot of electron-electron repulsion among the orbitals, making the third electron…arrow_forward
- A hydrogen-like ion is an ion containing only one electron. The energies of the electron in a hydrogen-like ion are given by (2.180 × 10-¹5 1) 2² (1) J) E = kJ where n is the principal quantum number, and Z is the atomic number of the element. Calculate the ionization energy, in your answer to 4 significant digits. mol Note: Reference the Fundamental constants table for additional information. ·2+ of the Li²+ ion. Round Iarrow_forwardla) For each of the following pairs indicate which element you would expect to have the larger First Ionization Energy and which one would have the larger radius: (a) Ca and Cl; (b) Sn and Tl; (c) Ba and Bi (d) Fr and Cs b) For each pair indicate which Ion you would expect to have the largest Radius: (a) 0²- and O; (b) N³ and Mg²+ (c) Al3* and Al ne Elearrow_forward6) (a) The solubility of carbon tetrachloride (CCI4) in water at 25°C is 1.2 g/L. The solubility of chloroform (CHCI3) at the same temperature is 10.1g/L. Why is chloroform almost 10 times more soluble in water than is carbon tetrachloride? (b) Explain the difference between the Bohr model for the hydrogen atom and the quantum-mechanical model. Is the Bohr model consistent with Heisenberg's uncertainty principle? (Ctrl)arrow_forward
- Use the following data and the Born-Haber cycle to calculate the first ionization energy (ΔH IE1) of K(g) K(s) → K(g) 89 kJ mol-1 Cl(g) + e– → Cl–(g) -349 kJ mol-1 K(s) + ½ Cl2(g) → KCl(s) -437 kJ mol-1 K(g) → K+(g) + e– ΔH IE1 Cl2(g) → 2Cl(g) 244 kJ mol-1 K+(g) + Cl–(g) → KCl(s) -717 kJ mol-1 Use the bond energies listed in the table below to estimate the standard enthalpy of the reaction: CCl3CHCl2(g) + 2HF(g) → CCl3CHF2(g) + 2HCl(g) C – H 412 kJ mol-1 C – C 348 kJ mol-1 C – Cl 338 kJ mol-1 H – Cl 431 kJ mol-1 C – F 484 kJ mol-1 H – F 565 kJ mol-1arrow_forwardUse the following data and the Born-Haber cycle to calculate the first ionization energy (ΔH IE1) of K(g) K(s) → K(g) 89 kJ mol-1 Cl(g) + e– → Cl–(g) -349 kJ mol-1 K(s) + ½ Cl2(g) → KCl(s) -437 kJ mol-1 K(g) → K+(g) + e– ΔH IE1 Cl2(g) → 2Cl(g) 244 kJ mol-1 K+(g) + Cl–(g) → KCl(s) -717 kJ mol-1arrow_forward(ii) Draw the Born-Haber cycle and use the data below for the formation of calcium chloride, to calculate the electron affinity of chlorine: Ca(s) → Ca(g) AHat = +190 kJ/mol Ca(g) > Caz*(g) + 2e¨ AH¡ɛ = +1730 kJ/mol Cl2{g) 2C1(g) AHat = +121 kJ/mol Caz (g) + 2Cl(g) > CaCl2(s) AHLE = -2184 kJ/mol Ca(s) + Cl2(g) –> CaCl2(s) AH; = -795 kJ/molarrow_forward
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