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At least 43 of the elements that are composed of individual atoms (as opposed to diatomic gases, molecular elements like sulfur and phosphorus, covalent network elements like carbon, silicon, and germanium) have either hexagonal close-packed or face-centered cubic crystal lattices. How would you rationalize this?

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Physical Chemistry

2nd Edition
Ball + 3 others
Publisher: Wadsworth Cengage Learning,
ISBN: 9781133958437

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Section
BuyFindarrow_forward

Physical Chemistry

2nd Edition
Ball + 3 others
Publisher: Wadsworth Cengage Learning,
ISBN: 9781133958437
Chapter 21, Problem 21.21E
Textbook Problem
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At least 43 of the elements that are composed of individual atoms (as opposed to diatomic gases, molecular elements like sulfur and phosphorus, covalent network elements like carbon, silicon, and germanium) have either hexagonal close-packed or face-centered cubic crystal lattices. How would you rationalize this?

Interpretation Introduction

Interpretation:

The validation of the fact that monoatomic elements prefer to have either hexagonal close-packed or face-centered cubic crystal lattices is to be stated.

Concept introduction:

A unit cell of the crystal is the three-dimensional arrangement of the atoms present in the crystal. The unit cell is the smallest and simplest unit of the crystal which on repetition forms an entire crystal. Unit cell can be a cubic unit cell or hexagonal unit cell. The classification of a unit cell depends on the lattice site occupied by the atoms.

Explanation of Solution

The structure of hexagonal close-packed and face-centered cubic crystal lattices are shown below as,

Figure 1

The packing efficiency of hexagonal close-packed and face-centered cubic crystal lattices is ap...

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Chapter 21 Solutions

Physical Chemistry
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