How many atoms are there in a cubic close-packed unit cell of platinum? О а. 1 O b.6 Ос. 2 O d.4 O e. 8

Q: 2. How many octahedral and tetrahedral holes are there in CCP and HCP unit cells?

A:

Q: The most space efficient arrangement of spheres is found in which type of unit cell?   I.…

A: Packing efficiency determine how efficiently spheres are arranged. High value of packing efficiency…

Q: 1. Given the following data, calculate the lattice energy of aluminum oxide, Al2O3.  a.-13 272 kJ…

A: Answer: Note: data mentioned of the electron gain enthalpy of oxygen is wrong. First electron gain…

Q: Based on the atom arrangement/layering and unit cell packing, what is the cell type of CsCl? a.…

A:

Q: 7.) A compound crystallizes with cations (A) in a face centered cubic (fcc) lattice with eight…

A: A unit cell is a repeating unit of a crystal lattice. The number of particles present in a unit cell…

Q: How many atoms are there in a body-centered cubic unit cell of rubidium? а. 4 b. 8 О с. 1 d. 6 Ое. 2

A:

Q: In what type of unit cell are the "A" atoms arranged in the unit cell provided? 2 Select one: a.…

A: As atoms occupy all corner sites and one atom is present at body centre

Q: Using the radius ratio, predict the type of hole where the Tl+ ion is present in the TlCl crystal…

A:

Q: A simple cubic cell contains one metal atom with a metallic radius of 100 pm. a. Determine the…

A: In the given question we have to calculate the % packing efficiency of Simple cubic unit cell and…

Q: 2. In an FCC structure, the centers of the atoms are found on the corners of the cubic unit cell and…

A: a)Unit cell length,do  The distance between the centres of two corner atoms on the same edge,…

Q: A simple cubic cell contains one metal atom with a metallic radius of 100 pm. a. Determine the…

A: Radius of atom R = 100 pm = 100 * 10-12  m = 10-10 m    Note : As per guidelines we are answering…

Q: What is the coordination number of the crystal structure shown below?

A: Here . Given crystal is face centred cubic lattice. (fcc)

Q: 7. Palladium crystallizes in a cubic closest packed lattice with a density of 12.02 g/cm. Determine…

A:

Q: The element Zr has hcp packing with a hexagonal unit cell. The density of zirconium is 6.51 g/mL.…

A: since density = mass of atoms of Zr in cell / volume of cell assuming volume of cell = V Also, we…

Q: 4. Which one of the following statements is INCORRECT? a. Polonium is the only metal that has a…

A: Given, option (a) Polonium is the only metal that has a primitive cubic lattice (b) The lattice…

Q: A crystalline form of iron  has a density of 7.874  g/cm3. If the radius of iron  atoms is 124.0…

A:

Q: What is the volume of the unit cell for a body-centered cubic structure for atoms with radius, r? a.…

A:

Q: 25. Which statement about crystal structure is false? a. Rhombic, triclinic and cubic are examples…

A: The objective of the question is to identify the false statement among the given options related to…

Q: Aluminum metal crystallizes in a face-centered cubic unit cell. a. How many aluminum atoms are in a…

A: Aluminium crystallizes in a fcc unit cell. In fcc, eight atoms are there in eight corner of the unit…

Q: Which one of the following statements is INCORRECT?   a.  Polonium is the only metal that has a…

A: Mostly metals don't show primitive cubic lattice.  Alkali metals are comparatively of larger size…

Q: 3. In an FCC unit cell, which of the following directions has the shortest repeat distance? a. [100]…

A: In an FCC (face-centered cubic) unit cell, the lattice points are located at the corners and at the…

Q: 1. A metallic solid ingot has a mass of 14.7 grams. It was loaded into a graduated cylinder…

A: The density of ingot is calculated in step two.

Q: Metal borides MB, exist for many transition metals. a. What is the minimum radius for the host metal…

A: The radius of of the atom and the radius of the octahedral void in close packing is having the…

Q: The mineral clausthalite is composed of lead selenide (PbSe). This mineral adopts the NaCl structure…

A: Unit cell can be defined as the repeating unit in crystal structure.

Q: Which of the following crystal structures are harder and malleable O a. FCC O b. BCC О с. НСР O d.…

A: FCC (face centred cubic) structures have planes which makes them more ductile due to the atomic…

Q: The structure of the unit cell when CaF2 crystallizes is shown below: How many Ca2+ ions are…

A: The structure of the unit cell when CaF2 crystallizes is shown above structure. Then,

Q: 5. The space-filling representation provided below is an example of a atom(s). unit cell, which…

A: Primitive unit cell contain atoms present only at corners. Body centered unit cell contain atoms…

Q: The density of solid Ni is 8.90 g/cm³. How many atoms are present per cubic centimeter (cm³) of Ni?…

A:

Q: What is face centered cubic unit cell? What is its significance in the field of engineering and…

A: Unit cell is the smallest repeating unit of the crystal structure. It is the basic building block of…

Q: Choose the packing scheme that gives the highest density of spheres. a. Simple cubic packing b.…

A: Choose the packing scheme that gives the highest density of spheres.

Q: A crystalline form of platinum has a density of 21.45 g/cm³. If the radius of platinum atoms is…

A: A crystalline form of platinum has a density of 21.45 g/cm³. If the radius of platinum atoms is…

Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.