Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 7, Problem 71SCQ
- (a) Explain why the sizes of atoms change when proceeding across a period of the periodic table.
- (b) Explain why the sizes of transition metal atoms change very little across a period.
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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) 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?
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?
2.(a) Write the full electron configuration for each of Ge and Ge3-2.(b) Write the noble gas configuration, and valence configuration of Ge 2.(c) Write the orbital diagram for the Ge3-2.(d) For the unpaired electron in the orbital diagram for the Ge3-ion, give its four quantum numbersn,l,ml,ms 2.(e) Is Ge3+ diamagnetic or paramagnetic?
Chapter 7 Solutions
Chemistry & Chemical Reactivity
Ch. 7.1 - How many electrons can be accommodated in the n =...Ch. 7.1 - Prob. 2RCCh. 7.2 - Based on the Aufbau principle and the n + rule,...Ch. 7.3 - (a) What element has the configuration...Ch. 7.3 - Write one possible set of quantum numbers for the...Ch. 7.3 - Using the periodic table and without looking at...Ch. 7.3 - 1. What is the electron configuration of selenium...Ch. 7.3 - 2. Based on electron configurations, which of the...Ch. 7.4 - Prob. 1CYUCh. 7.4 - Prob. 1RC
Ch. 7.4 - Prob. 2RCCh. 7.4 - Which of the following species is most...Ch. 7.5 - Without looking at the figures for the periodic...Ch. 7.5 - What is the trend in sizes of the ions K+, S2, and...Ch. 7.5 - Prob. 2RCCh. 7.6 - Give the electron configurations for iron and the...Ch. 7.6 - Prob. 2QCh. 7.6 - Prob. 3QCh. 7.6 - Prob. 4QCh. 7.6 - Prob. 1RCCh. 7.6 - Prob. 2RCCh. 7.6 - The most common oxidation state of a rare earth...Ch. 7.6 - Prob. 6QCh. 7.6 - Prob. 7QCh. 7.6 - Use the atomic radii of scandium, yttrium,...Ch. 7.6 - Prob. 9QCh. 7.6 - Prob. 10QCh. 7 - Write the electron configurations for P and CI...Ch. 7 - Write the electron configurations for Mg and Ar...Ch. 7 - Using spdf notation, write the electron...Ch. 7 - Using spdf notation, give the electron...Ch. 7 - Prob. 5PSCh. 7 - Prob. 6PSCh. 7 - Use noble gas and spdf notations to depict...Ch. 7 - The lanthanides, once called the rare earth...Ch. 7 - Prob. 9PSCh. 7 - Prob. 10PSCh. 7 - What is the maximum number of electrons that can...Ch. 7 - What is the maximum number of electrons that can...Ch. 7 - Depict the electron configuration for magnesium...Ch. 7 - Depict the electron configuration for phosphorus...Ch. 7 - Using an orbital box diagram and noble gas...Ch. 7 - Using an orbital box diagram and noble gas...Ch. 7 - Using orbital box diagrams, depict an electron...Ch. 7 - Prob. 18PSCh. 7 - Prob. 19PSCh. 7 - Using orbital box diagrams and noble gas notation,...Ch. 7 - Manganese is found as MnO2 in deep ocean deposits....Ch. 7 - One compound found in alkaline batteries is NiOOH,...Ch. 7 - Prob. 23PSCh. 7 - Arrange the following elements in order of...Ch. 7 - Prob. 25PSCh. 7 - Prob. 26PSCh. 7 - Which of the following groups of elements is...Ch. 7 - Arrange the following atoms in order of increasing...Ch. 7 - Compare the elements Na, Mg, O, and P. (a) Which...Ch. 7 - Compare the elements B. Al, C, and Si. (a) Which...Ch. 7 - Explain each answer briefly. (a) Place the...Ch. 7 - Explain each answer briefly. (a) Rank the...Ch. 7 - Identify the element that corresponds to each of...Ch. 7 - Identify the element that corresponds to each of...Ch. 7 - Explain why the photoelectron spectra of hydrogen...Ch. 7 - Sketch the major features (number of peaks and...Ch. 7 - These questions are not designated as to type or...Ch. 7 - The deep blue color of sapphires comes from the...Ch. 7 - Using an orbital box diagram and noble gas...Ch. 7 - Prob. 40GQCh. 7 - Prob. 41GQCh. 7 - Prob. 42GQCh. 7 - Which of the following is not an allowable set of...Ch. 7 - A possible excited state for the H atom has an...Ch. 7 - The magnet in the following photo is made from...Ch. 7 - Name the element corresponding to each...Ch. 7 - Arrange the following atoms in order of increasing...Ch. 7 - Prob. 48GQCh. 7 - Answer the questions below about the elements A...Ch. 7 - Answer (he following questions about the elements...Ch. 7 - Which of the following ions are unlikely to be...Ch. 7 - Prob. 52GQCh. 7 - Answer each of the following questions: (a) Of the...Ch. 7 - Prob. 54GQCh. 7 - Prob. 55GQCh. 7 - Two elements in the second transition series (Y...Ch. 7 - Prob. 57GQCh. 7 - The configuration of an element is given here. (a)...Ch. 7 - Answer the questions below about the elements A...Ch. 7 - Answer the questions below concerning ground state...Ch. 7 - Nickel(II) formate [Ni(HCO2)2] is widely used as a...Ch. 7 - Spinets are solids with the general formula M2+...Ch. 7 - The following questions use concepts from this and...Ch. 7 - Which ions in the following list are not likely to...Ch. 7 - Answer the following questions about first...Ch. 7 - The ionization of the hydrogen atom can be...Ch. 7 - Compare the configurations below with two...Ch. 7 - Prob. 68SCQCh. 7 - Write electron configurations to show the first...Ch. 7 - Prob. 70SCQCh. 7 - (a) Explain why the sizes of atoms change when...Ch. 7 - Which of the following elements has the greatest...Ch. 7 - Prob. 73SCQCh. 7 - Prob. 74SCQCh. 7 - The energies of the orbitals in many elements have...Ch. 7 - The ionization energies for the removal of the...Ch. 7 - Using your knowledge of the trends in element...Ch. 7 - Prob. 78SCQCh. 7 - Prob. 79SCQCh. 7 - Prob. 80SCQCh. 7 - Thionyl chloride. SOCl2, is an important...Ch. 7 - Prob. 82SCQCh. 7 - Slaters rules are a way to estimate the effective...
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- choose three . What are the characteristerses of a metal like element? (a) they try to get additional electrons (b) they are melleable. (c) they are lightly to give away or share electrons. (d) they are good conductors of electricityarrow_forwardWhich element would you expect to be more metallic?(a) Ca or Rb(b) Mg or Ra(c) Br or Iarrow_forwardIdentify each statement as true or false: (a) Cations are largerthan their corresponding neutral atoms. (b) Li+ is smallerthan Li. (c) Cl- is bigger than I-.arrow_forward
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