Which of the Following Statements Concerning a Face-Centered Cubic Unit $\sqrt 8$

question 2

Multiple Choice

Which of the following statements concerning a face-centered cubic unit cell and the corresponding lattice,made up of identical atoms,is incorrect?

• A)The coordination number of the atoms in the lattice is 8.
• B)The packing in this lattice is more efficient than for a body-centered cubic system.
• C)If the atoms have radius r,then the length of the cube edge is \( \sqrt 8\) \(\times\) r.
• D)There are four atoms per unit cell in this type of packing.
• E)The packing efficiency in this lattice and hexagonal close packing are the same.

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Definitions:

Random Variable

A variable whose values are outcomes of a random phenomenon and are subject to variability, characterized by a distribution.

Normal Distribution

A distribution of probabilities that is evenly spread about the mean, indicating that occurrences close to the mean are more common than those further away.

Standard Deviation

A statistic that measures the dispersion or variability of a data set relative to its mean.

Normal Distribution

A probability distribution that is symmetrical around its mean, showing that data near the mean are more frequent in occurrence than data far from the mean.