Answered: Nickel and aluminum both have FCC…

Nickel and aluminum both have FCC crystal structures. Which of the following statement is correct about packing factor of their unit cell?

Understanding Motor Controls

4th Edition

ISBN:9781337798686

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter44: Semiconductors

Section: Chapter Questions

Problem 4RQ

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Concept explainers

The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.

Question

Nickel and aluminum both have FCC crystal structures. Which of the following statement is
correct about packing factor of their unit cell?
Atomic mass of Ni> Atomic mass of Al
Atomic radius of Ni< Atomic radius of Al
a. The unit cell of nickel has a higher packing factor than the unit cell of aluminum
b. The unit cell of nickel has a lower packing factor than the unit cell of aluminum
c. The unit cell of nickel has the same packing factor as the unit cell of aluminum
d. Provided information is not enough to make a judgment

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Principal Metallic Crystal Structures and Crystal Structure Analysis

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