Answered: 2. Prove that the atomic packing factor…

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Chemistry

2. Prove that the atomic packing factor of hexagonal close-packed is 0.74.

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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Concept explainers

Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.

Question

Please answer question number 2

1. In the cubic system given the directions:
a. Find the angle between [11 0] and [1 1 1]
b. Find the angles of the triangle formed by [2 2 0], [11 2] and [-1 -1 2]
2. Prove that the atomic packing factor of hexagonal close-packed is 0.74.
3. An unknown metal exhibits FCC crystal structure has an observed atomic radius of 0.14
nm and theoretical density of 11.538 g/cm3, Identify the unknown metal.

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