what is the least common structure adopted by metals?
The least common structure adopted by metals is the complex hexagonal close-packed (HCP) structure
The least common structure adopted by metals is the complex hexagonal close-packed (HCP) structure.
Metals typically adopt one of three common structures: body-centered cubic (BCC), face-centered cubic (FCC), or hexagonal close-packed (HCP).
In the BCC structure, each atom is located at the center of a cube and has eight neighboring atoms. This structure is adopted by metals such as iron and tungsten.
In the FCC structure, each atom is located at the center of a face of the cube and has twelve neighboring atoms. This structure is adopted by metals such as aluminum, copper, and gold.
The HCP structure, on the other hand, consists of layers of atoms arranged in a close-packed hexagonal pattern, with each atom having twelve neighboring atoms. This structure is adopted by a limited number of metals, including titanium, zinc, and cadmium.
While BCC and FCC structures are more common, the HCP structure is relatively less common among metals. However, it is important to note that the relative commonness of these structures can also vary depending on the specific element and its crystallographic behavior under different conditions.
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