What is the angle between the [200] and [200] directions in a lead with an FCC crystal structure?

Q: What are the Miller indices for the plane shown below? y

A: In the given figure, the x axis  intercept is a, the y axis intercept is -b and z axis intercept is…

Q: 10. Lithium crystallizes in a bcc structure with an edge length of 3.509 Å. Calculate its density.…

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Q: What are all the planes in {101} family of an orthorhombic lattice?

A: Solution:

Q: If the length of the side of a body-centered cubic structure is 300 pm, what is the radius of the…

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Q: Iron sulfide (FeS) may form a crystal structure that consists of an HCP arrangement of S² ions. (a)…

A: (a) The iron (Fe2+) ions will occupy octahedral interstitial sites in the HCP arrangement of S² ions…

Q: Explain why martensite is hard? What is the crystal structure of martensite? Show the positions of…

A: Martensite has a BCC(Body Centred Cubic) crystal structure. It has distorted BCC ferrite lattice…

Q: Draw the following crystal directions within an orthorhombic unit cell: [101], [112], [100], [110],…

A: The above question is based on orthorombic unit cell.

Q: If the atomic radius of lead, which has an FCC crystal structure, is 0.175 nm, calculate the volume…

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Q: What are the families of crystal directions and planes? What are the closest packed crystalline…

A: given; What are the families of crystal directions and planes? What are the closest packed…

Q: 4. Calculate the fraction of vacant lattice sites for pure copper at 1080°C. The value of the…

A: Temperature T = 1080 C = 1080+273 = 1353 K

Q: Out of every 1000 Tera atoms in pure Si, 28 atoms provide a free electron at room temperature. (1)…

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Q: Consider the ReO3 unit cell shown below, with a = 3.74 Å and ∆ Hsub = 626 kj/mol  (a) What is the…

A: Solution: Given Data: a=3.74 Ao∆Hsub=626 kJ/mol   To Find: (a) What is the Bravais lattice and…

Q: Determine the Miller Indices of Direction C and D in an HCP crystal.

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Q: how to transform fcc bravais lattice to hexagonal axes? The miller indices is (1 1 1). Show…

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Q: Calculate the ionic characterisation value for two elements with electronegativity of 0.7 and 3.98.…

A: two elements electronegativity x1=0.7 x2=3.98

Q: (b) Find planar atomic densities by considering the section of a (110) plane within a unit cell for:…

A: For solution refer below images.

Q: In FCC or BCC unit-cells, interstitial atoms can occupy following positions: (0,0,1). (1, ½, 0), (1,…

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Q: Draw the planes below with the miller indices. (101), (001), (100), (110), (011), (101)

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Q: Given that Pt has an FCC crystal structure, density (p) = 21.45 g/cm², atomic mass (Ap;)= 195.084…

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Q: Show how to get this indices miller bravais for a HCP structure, right from the 3 indices used on…

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Q: what is the miller indices of (-2/3 -2/3 0)

A: Answer:

Q: What are the three types of lattice structures?

A: The three types of lattice structure are BCC, FCC, HCP

Q: 6- Determine the minimum radius of an atom that will just fit into (a) The tetrahedral interstitial…

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The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.