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BCC
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∙ 11y ago
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From SAED pattern from TEM how you determined which element is present?
you have to measure the distance and angles between the main point and the surrounding pattern from the diffraction you create. Each crystal has its own structure (BCC, FCC, HCP, etc...) and each element in the crystal structure determines the lattice spacing....
How do you calculate the packing fraction of hcp structure?
0.74
What are the three differences packing arrangements found in metallic crystals?
Most metals and alloys crystallize in one of three very common structures: body-centered cubic (bcc), Li is an example of bcc , hexagonal close packed (hcp) Au is an example of hcp, or cubic close packed (ccp, also called face centered cubic, fcc) Ag is an example of fcg. The yield strength of a "perfect" single crystal of pure Al is ca. 10^6 psi.
What is the difference between molecular structure and crystal structure?
The difference between atomic structures and crystal structures is that in atomic structures, atom patterns are mismatched, random, and disordered unlike crystal structures in which atoms are positioned in orderly and repeated patterns.For example to crystalline structure; BCC FCC and HCP
What is the Lewis structure for HCP?
H(single bond)C(triple bond)P(one pair of lone electrons)
Why FCC metals are more ductile than Bcc metals?
FCC has a higher packing efficiency and the slip planes are more closely packed than BCC. Infact BCC has more slip systems than FCC. But they are not as closely packed as FCC. For plastic deformation, we need atleast 5 independent slip systems. Both FCC and BCC have those. But the previously mentioned factor makes FCC more ductile than BCC.
What are the three most common metal crystal structure list five metals?
a- However most metals and many other solids have unit cell structures described as body center cubic (bcc), face cantered cubic (fcc) or Hexagonal Close Packed (hcp). 1- iron 2- sodium 3- gold 4- cooper 5- zinc
Volume of a HCP unit cell?
The volume of HCP is 8*pi*r^3 or 25.13*r^3
What is the coordination number in hcp?
What is the atomic packing factor of hcp?
.74
What is CPR HCP?
CPR for the Healthcare Provider
How would you describe hereditary coproporphyria?
HCP is similar to AIP, but the symptoms are typically milder. People with HCP may have some skin sensitivity to sunlight, however, extensive damage to the skin is rarely seen.
