Copper (Cu) has an fcc structure, where the mass of a Cu atom is 63 in atomic mass units. The density of Cu is 8.9×103 kgm−3. Tungsten (W) typically has a bcc structure, where the mass of a W atom is 184 in atomic mass units. The density of W is 19.3×103 kgm−3 . (i) Use the above data to find the radius of a Cu atom, and of a W atom. (ii) Which atom has the larger radius, and why? You may use the fact that 1 atomic mass unit is equivalent to 1.66 × 10−27 kg.
Copper (Cu) has an fcc structure, where the mass of a Cu atom is 63 in atomic mass units. The density of Cu is 8.9×103 kgm−3. Tungsten (W) typically has a bcc structure, where the mass of a W atom is 184 in atomic mass units. The density of W is 19.3×103 kgm−3 . (i) Use the above data to find the radius of a Cu atom, and of a W atom. (ii) Which atom has the larger radius, and why? You may use the fact that 1 atomic mass unit is equivalent to 1.66 × 10−27 kg.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Copper (Cu) has an fcc structure, where the mass of a Cu atom is 63 in
The density of Cu is 8.9×103 kgm−3.
Tungsten (W) typically has a bcc structure, where the mass of a W atom is 184 in atomic
mass units. The density of W is 19.3×103 kgm−3
.
(i) Use the above data to find the radius of a Cu atom, and of a W atom.
(ii) Which atom has the larger radius, and why?
You may use the fact that 1 atomic mass unit is equivalent to 1.66 × 10−27 kg.
Transcribed Image Text:O X
Figure 2: A hexagonal close-packed layer of atoms in two dimensions.
(a)
(b)
Figure 3: Conventional unit cells for: (a) the fcc structure; (b) the bcc structure.
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