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# In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å ...

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2 years ago
 In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å ... In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 2.01 Å (Li–F), 2.82 Å (Na-Cl), 3.30 Å (K–Br), and 3.67 Å (Rb–I), respectively.1. Predict the cation–anion distance using the values of ionic radii given in Figure 7.7, on page 257 in the textbook.2. Calculate the difference between the experimentally measured ion–ion distances and the ones predicted from Figure 7.7. Assuming we have an accuracy of 0.04 Å in the measurement, would you say that the two sets of ion–ion distances are the same or not? Why, or why not?3. What estimates of the cation–anion distance would you obtain for these four compounds using bonding atomic radii? Are these estimates as accurate as the estimates using ionic radii? Explain your answer. Read 2797 times 42 Replies
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2 years ago
 Hi SarahThe solution is provided below.Please provide feedback Attached file Thumbnail(s): You must login or register to gain access to this attachment.
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2 years ago
 Thank you, I actually understood that part. It is actually part 2 (the accuracy part) and 3 that I am stuck on. I appreciate your help!
Answer accepted by topic starter
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2 years ago
 Sign in or Sign up in seconds to unlock everything. Attached file docx (7).docx (15.04 KB) You must login or register to gain access to this attachment.
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