Calcium has the Face-Centered Cubic (FCC) crystal structure shown in the figure below. The atomic radius of calcium is r = 0.197 nm at room temperature (20°C). Calculate the edge length "a" of the unit cell

Calcium has the Face-Centered Cubic (FCC) crystal structure shown in the figure below. The atomic radius of calcium is r = 0.197 nm at room temperature (20°C). Calculate the edge length "a" of the 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

Calcium has the Face-Centered Cubic
(FCC) crystal structure shown in the figure
below. The atomic radius of calcium is r =
0.197 nm at room temperature (20°C).
Calculate the edge length "a" of the unit
cell
Select one:
a. None of these
O b. 0.612
O c. 0.488
O d. 0.333
e. 0.557

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