Chemistry: The Central Science Plus Mastering Chemistry with Pearson eText -- Access Card Package (14th Edition)

14th Edition

ISBN: 9780134292816

Author: Theodore E. Brown, H. Eugene LeMay, Bruce E. Bursten, Matthew E. Stoltzfus

Publisher: PEARSON

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Textbook Question

Chapter 7, Problem 15E

Detailed calculations show that the value of Z_e_f_f for the outermost electrons in Na and K atoms is 2.51 + and 3.49 +, respectively. (a) What value do you estimate for Z_e_f_f experienced by the outermost electron in both Na and K by assuming core electrons contribute 1.00 and valence electrons contribute 0.00 to the screening constant? (b) What values do you estimate for Z_e_f_f using Slater's rules? (c) Which approach gives a more accurate estimate of Z_e_f_f? (d) Does either method of approximation account for the gradual increase in Z_iff that occurs upon moving down a group? (e) Predict Z_e_f_f for the outermost electrons in the Rb atom based on the calculations for Na and K.

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Chapter 7, Problem 14E

Chapter 7, Problem 16E

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Consider the isoelectronic ions Cl- and K+. (a) Which ionis smaller? (b) Using Equation 7.1 and assuming that coreelectrons contribute 1.00 and valence electrons contributenothing to the screening constant, S, calculate Zeff for thesetwo ions. (c) Repeat this calculation using Slater’s rules toestimate the screening constant, S. (d) For isoelectronic ions,how are effective nuclear charge and ionic radius related?

A) Which of the halogen elements has the highest density in its standard state? B) Which of the elements of the third period should have the highest 2nd ionization energy? C) For which of Al, Si or P is the absolute value of the Electron Affinity greatest? D) Which of the ions Mg2+, Sr2+, Ca2+, Be2+, Ba2+, or Ra2+ is the smallest? E) For the elements: X = Br, I, Cl, or H, which has the the smallest average X-C bond energy?

(a) Rank elements: Na, Mg, Al, and K, in increasing order of: (i) atomic size; (ii) ionization energy, and (iii) reactivity. (b) Explain why atomic size decreases from left to right, but increases from top to bottom; (c) Explain why ionization energy increases from left to right, but decreases from top to bottom; (d) Explain why the reactivity of alkali metals (Group-1) increases from top to bottom, where as the reactivity of halogen (Group-17) decreases from top to bottom.

Chapter 7 Solutions

Chemistry: The Central Science Plus Mastering Chemistry with Pearson eText -- Access Card Package (14th Edition)

Ch. 7.3 - Hypothetical elements X and Y form a molecule XY2,...Ch. 7.3 - Prob. 7.1.2PE Ch. 7.3 - Prob. 7.2.1PE Ch. 7.3 - Arrange Be, C, K, and Ca in order of increasing...Ch. 7.3 - Arrange the following atoms and ions in order of...Ch. 7.3 - Prob. 7.3.2PE Ch. 7.3 - Prob. 7.4.1PE Ch. 7.3 - Prob. 7.4.2PE Ch. 7.4 - Prob. 7.5.1PE Ch. 7.4 - Prob. 7.5.2PE

Ch. 7.4 - Consider the following statements about first...Ch. 7.4 - Prob. 7.6.2PE Ch. 7.4 - Prob. 7.7.1PE Ch. 7.4 - Write the electron configurations for (a) Ga3+...Ch. 7.6 - Prob. 7.8.1PE Ch. 7.6 - Prob. 7.8.2PE Ch. 7.6 - Prob. 7.9.1PE Ch. 7.6 - Prob. 7.9.2PE Ch. 7.7 - Prob. 7.10.1PE Ch. 7.7 - Prob. 7.10.2PE Ch. 7 - Prob. 1DE Ch. 7 - Prob. 1E Ch. 7 - 7.2 Which of these spheres represents F, which...Ch. 7 - Prob. 3E Ch. 7 - Prob. 4E Ch. 7 - Prob. 5E Ch. 7 - Prob. 6E Ch. 7 - Prob. 7E Ch. 7 - Prob. 8E Ch. 7 - Prob. 9E Ch. 7 - Prob. 10E Ch. 7 - Prob. 11E Ch. 7 - 7.12 Moseley's experiments on X rays emitted from...Ch. 7 - Among elements 1-18, which element or elements...Ch. 7 - Prob. 14E Ch. 7 - Detailed calculations show that the value of Zeff...Ch. 7 - Detailed calculations show that the value of Zeff...Ch. 7 - Which will experience the greater effective...Ch. 7 - Arrange the following atoms in order of increasing...Ch. 7 - Prob. 19E Ch. 7 - Prob. 20E Ch. 7 - Tungsten has the highest melting point of any...Ch. 7 - Prob. 22E Ch. 7 - Estimate the As-I bond length from the data in...Ch. 7 - Prob. 24E Ch. 7 - Using only the periodic table, arrange each set of...Ch. 7 - Using only the periodic table, arrange each set of...Ch. 7 - Prob. 27E Ch. 7 - Prob. 28E Ch. 7 - Which neutral atom is isoelectronic with each of...Ch. 7 - Some ions do not have a corresponding neutral atom...Ch. 7 - Consider the isoelectronic ions F- and Na+. (a)...Ch. 7 - Prob. 32E Ch. 7 - Prob. 33E Ch. 7 - Arrange each of the following sets of atoms and...Ch. 7 - Prob. 35E Ch. 7 - In the ionic compoundsLiF,NaCI,KBr, andRbl, the...Ch. 7 - Prob. 37E Ch. 7 - 7.38 Write equations that show the process for...Ch. 7 - Prob. 39E Ch. 7 - Prob. 40E Ch. 7 - Prob. 41E Ch. 7 - (a) What is the trend in first ionization energies...Ch. 7 - Prob. 43E Ch. 7 - Prob. 44E Ch. 7 - Prob. 45E Ch. 7 - Prob. 46E Ch. 7 - Prob. 47E Ch. 7 - Prob. 48E Ch. 7 - Write an equation for the second electron affinity...Ch. 7 - If the electron affinity for an element is a...Ch. 7 - Prob. 51E Ch. 7 - 7.52 What is the relationship between the...Ch. 7 - Prob. 53E Ch. 7 - Consider the following equation: Ca + (g) + e-...Ch. 7 - 7.55(a) Does metallic character increase,...Ch. 7 - Prob. 56E Ch. 7 - Prob. 57E Ch. 7 - Prob. 58E Ch. 7 - Predict whether each of the following oxides is...Ch. 7 - Prob. 60E Ch. 7 - Would you expect manganese(II) oxide, MnO, react...Ch. 7 - Prob. 62E Ch. 7 - Prob. 63E Ch. 7 - An element X reacts with oxygen to form X02 and...Ch. 7 - Prob. 65E Ch. 7 - Prob. 66E Ch. 7 - Prob. 67E Ch. 7 - Prob. 68E Ch. 7 - Prob. 69E Ch. 7 - Write a balanced equation for the reaction that...Ch. 7 - (a) As described in Section 7.7 , the alkali...Ch. 7 - Prob. 72E Ch. 7 - Prob. 73E Ch. 7 - Prob. 74E Ch. 7 - Prob. 75E Ch. 7 - Prob. 76E Ch. 7 - Prob. 77E Ch. 7 - Prob. 78E Ch. 7 - Consider the stable elements through lead (Z =...Ch. 7 - 17.80]Figure 7.4 shows the radial probability...Ch. 7 - (a) If the core electrons were totally effective...Ch. 7 - Prob. 82AE Ch. 7 - Prob. 83AE Ch. 7 - Prob. 84AE Ch. 7 - Prob. 85AE Ch. 7 - The following observations are made about two...Ch. 7 - Prob. 87AE Ch. 7 - Prob. 88AE Ch. 7 - Prob. 89AE Ch. 7 - Prob. 90AE Ch. 7 - Explain the variation in the ionization energies...Ch. 7 - Prob. 92AE Ch. 7 - Prob. 93AE Ch. 7 - Prob. 94AE Ch. 7 - Prob. 95AE Ch. 7 - Prob. 96AE Ch. 7 - Prob. 97AE Ch. 7 - The electron affinities. in kJ/mol, for the group...Ch. 7 - 7.99 Hydrogen is an unusual element because it...Ch. 7 - Prob. 100AE Ch. 7 - Prob. 101AE Ch. 7 - Which of the following is the expected product of...Ch. 7 - Elemental cesium reacts more violently with water...Ch. 7 - Prob. 104AE Ch. 7 - Prob. 105AE Ch. 7 - Prob. 106AE Ch. 7 - Prob. 107AE Ch. 7 - Prob. 108AE Ch. 7 - Prob. 109IE Ch. 7 - Prob. 110IE Ch. 7 - Prob. 111IE Ch. 7 - Mercury in the environment can exist in oxidation...Ch. 7 - When magnesium metal is burned in air (Figure 3.6...Ch. 7 - Prob. 114IE Ch. 7 - Prob. 115IE

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