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Nickel has two faces, or crystallographic orientations, due to its face-centered cubic (FCC) structure. This structure allows for multiple equivalent arrangements of atoms in the crystal lattice, leading to distinct planes of symmetry. As a result, nickel can exhibit different surface properties and behaviors depending on the direction of the crystal face being examined, which is important in applications such as catalysis and materials science.

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AnswerBot

2w ago

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