{"page":"\n\n
\n
\n
\n
\n
\n\nVideo\n
\n

\n3D Hexagonal Closed Packing Layered Perfection\n

\n
\n
\nGet Free Access for 10 Days!\n
\n
\n
\n
\n
\n
×
\n\n\n
\n\nPublisher:\n\nCurated Video\n\n\n
\n
\nLayered Perfection: 3D Closed Packing from Hexagonal Layers\"The process of obtaining three-dimensional (3D) close packing from hexagonal layers involves stacking two-dimensional hexagonal layers one above the other in a specific manner...\nLayered Perfection: 3D Closed Packing from Hexagonal Layers\"
The process of obtaining three-dimensional (3D) close packing from hexagonal layers involves stacking two-dimensional hexagonal layers one above the other in a specific manner to create a close-packed structure in three dimensions. The first layer of the hexagonal close-packed layer is labeled 'A', and the second layer placed over it is labeled 'B'. The arrangement results in different voids and arrangements due to the alignment of the spheres in the two layers. When the triangular voids of the first layer are covered by the spheres of the second layer, or vice versa, tetrahedral voids are formed when the centers of the four nearest spheres are joined, resulting in a tetrahedron.
. The arrangement results in different voids and arrangements due to the alignment of spheres in the two layers. The third layer is stacked over the second layer, resulting in an 'ABABAB...' pattern. If the third layer is placed over the triangular voids of the second layer, a face-centered cubic (FCC) unit cell is formed. The arrangement is denoted as ABCABCABC..., with the fourth and first layers of spheres being identical. Metals like Cu and Ag crystallize in the FCC structure, resulting in a packing efficiency of 74% and a coordination number of 12.\n
\n
\n\n
\n
\n
\n
\n

Resource Details

\n
\n
\n
\n
Curator Rating
\n
\n
\n
\n
\n
\n
Educator Rating
Not yet Rated
\n
\n
\n
\n
\n
Media Length
\n
6:51
\n
\n
\n
\n
\n
Grade
9th - Higher Ed
\n
\n
\n
\n
\n
Subjects
Science
5 more...
\n
\n
\n
\n
\n
Media Type
Instructional Videos
\n
\n
\n
\n
\n
Source:
\n
\nAudio Visual Representation of Chemistry\n\n
\n
\n
\n
\n
\n
Date
\n
2024
\n
\n
\n
\n
\n\n
Language
English
\n
\n
\n
\n
\n
Audiences
For Teacher Use
2 more...
\n
\n
\n
\n
\n
Usage Permissions
Fine Print: Educational Use
\n
\n
\n
\n
\n
\n

Additional Materials

\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Transcript\n
\n
\n\nSign in or Join Now
\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" href=\"/subscription/new\">Video Preview\n
\n
\n
\n

Concepts

\n
\n
spheres, atoms, space, tetrahedron
\n
\n\n\n
\n
\n
\n
\n

Additional Tags

\n
\n
3d close packing, hexagonal layers, stacking, specific manner, close-packed structure, 'a' layer, 'b' layer, voids, arrangements, alignment of spheres, triangular voids, tetrahedral voids, 'ababab...' pattern, face-centered cubic (fcc) unit cell, abcabcabc... arrangement, packing efficiency, coordination number 12, cu, ag, tetrahedral void, octahedral void, central atom, coordination number, open structure, spheres belong, hcp arrangement, layer spheres, aligned, arrangement, shown, layer, named, noticed, called, pointing, depressions, arranged, capital, contact, surrounded, type
\n
\n\n\n
\n
\n
\n
\n

Classroom Considerations

\n
Best For: Explaining a topic
Best For: Reviewing
Video is ad-free
\n
\n
\n

Educator Ratings

\n
\n
\n
\n
\n
\n\nShow resource details\n
\n
\n\" data-title=\"Get Full Access\" data-container=\"body\" rel=\"popover\" tabindex=\"0\" aria-label=\"Play video: 3D Hexagonal Closed Packing Layered Perfection\" href=\"/subscription/new\">\"3D\n\n
\n
\n
\n\n\n\n"}