KCl has the same crystal structure as NaCl (fcc). a) Calculate the volume of the unit cell for KCl, given that the ionic radii are K+ = 152 pm and Cl- = 167 pm. b) Compute the density of KCl. Show your work. Note: pc: 1 atom/unit cell bcc: 2 atoms/unit cell fcc: 4 atoms/unit cell 1 pm = 1 x 10-10 cm Primitive Cubic (pc): 2 x (atomic radius) = edge Face-Centered Cubic: 4 x (atomic radius) = edge x √2 = face diagonal Body-Centered Cubic: 4 x (atomic radius) = edge x √3 = body diagonal Mass of 1 formula unit (ex. NaCl) x # of formula units per unit cell (ex. 4) = mass of unit cell

Q: Shown below is a representation of the unit cell of the mineral fluorite, CaF. The green spheres…

A:

Q: The density of solid Fe is 7.87 g/cm. How many atoms are present per cubic centimeter (cm') of Fe?…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Syres 2 Body-Centered Unit Cell (b) Fig 5. Body-Centered Cubic (BCC) Unit Cell. (a) Ball-and-Stick…

A: Crystals are the results of the  perfect regular distribution of atoms. Depending on the…

Q: А. this question. Sketch one 'face' of a unit cell for SC, FCC and BCC. A total of 3 sketches are…

A: The SC unit cell is shown below. The FCC unit cell is shown below. The BCC unit cell is shown…

Q: Gold atoms pack in a regular pattern in a three dimensional lattice in pure gold metal. Remember,…

A: The number of gold atoms in the FCC unit cell is = four The molar mass of gold is = 197.96 g/mol The…

Q: Simple Cubic Unit Cell (a) (b) (c)

A: We are given a simple cubic unit cell as follows:

Q: true or false   The density of the unit cell must be the same as the density of the bulk material.…

A:

Q: Metals with body‑centered cubic (bcc) structures, such as vanadium, are not close packed. If they…

A: The density for two given structures are expressed as follows,

Q: A compound consists of X and Y atoms. Its solid has the cubic unit structure shown below.  Based on…

A: In BCC one atom is present at the center as well as atoms are present at the 8 corners of the unit…

Q: 1) At 467°C, Calcium crystallizes in a body centered cubic structure and has a radius of 1.97 Å. a)…

A:

Q: When a particular substance crystallizes, it forms a body-centered cubic unit cell. It has a…

A:

Q: calculate density in g cm^-3 - molar mass is 200.5 g.mol - simple cubic lattice - radius of 185 pm

A: Given, The radius of atoms, (r)=185 pm. The edge length of the unit cell, (a)=2r=370 pm=3.70×10-8…

Q: 2 Bedy-Centered Unit Cell (a) (b) Fig 5. Body-Centered Cubic (BCC) Unit Cell. (a) Ball-and-Stick…

A: Z--> no. Of atom present in the unit cell. a= edge length of cube  r= radius of an atom.

Q: An element crystallizes in a face-centered cubic lattice and has a density of 1.456 g/cubic cm. The…

A:

Q: Assume that a material has a FCC crystal structure, an atomic radius is 0.13x nm, and an atomic…

A:

Q: Cobalt (Co) has an HCP crystal structure, an atomic radius of 0.1253 nm, and a c/a ratio of 1.623.…

A: As cobalt(Co) has an HCP( Hexagonal Closed Packed ) structure so to evaluate  the volume of the unit…

Q: 5. Europium forms a body-centered cubic unit cell and has a atomic radius equal to 240 pm in…

A:

Q: A body-centered cubic unit cell has a volume of 4.32x10^-23 cubic centimeters. Find the radius of…

A: Given:Volume = 4.32×10-23 cm3

Q: (1) Knowing that lithium crystallizes in a cubic system with lattice considering its atomic mass (7)…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Active metals release hydrogen from acids. True False     Europium forms a body centered cubic…

A: Given: Density = 4.68 g/cm3 Standard data: The molar mass of europium = 151.964 g/mol

Q: An unknown element has a simple cubic unit structure with an edge length of 398.94 pm. The element…

A:

Q: 1. Cobalt oxide (Co²* and O²) forms a crystalline ceramic structure. Oxygen has an ionic radius of…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: An unknown element has a simple cubic unit structure with an edge length of 471.97 pm. The element…

A:

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

A:

Q: Gold atoms pack in a regular pattern in a three-dimensional lattice in pure gold metal. Assume the…

A: We are given the edge length of unit cell for gold atom. We have to find the volume.

Q: Rhenium forms a series of solid oxides: Re2O7 (yellow), ReO3 (red), Re2O5 (blue), and ReO2 (brown).…

A: (a)

Q: 2) Sodium is a bright, white, soft, and wax-like element dissolves in seawater, crystallizes in rock…

A:

Q: Tantalum atoms packs in a regular pattern in a three dimensional lattice in pure tantalum metal.…

A: Tantalum atoms pack in Body Centered Cubic cell structure in its pure form. Length of the edge of…

Q: Zirconium has an HCP crystal structure and a density of 6.51 g/cm3. (a) What is the volume of its…

A: For HCP, number of atoms per unit cell, n = 6 Density, d = 6.51 g/cm3

Q: Some hypothetical metal has simple cubic crystal structure. If its atomic weight is 79.66 g/mol and…

A: We have to find the density . We are given a simple cubic crystal. It's radius is given. And atomic…

Q: Iridium crystallizes in a face-centered unit cell. The side of the unit cell is 3.833 x10-8 cm.…

A:

Q: Calculate the number of spheres that would be found within a simple cubic, a body-centered cubic,…

A:

Q: Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.023 g/cm3. a)Calculate…

A:

Q: An atom crystallizes in FCC crystal lattice and has a density of 10 g/ cm ^3 with unit cell edge…

A:

Q: ridium forms a face-centered cubic lattice, and an iridium atom has a radius of is 1.357 x 10-8 cm.…

A:

Q: Calculate the density of gold, which has a face-centered cubic unit cell with an edge length of…

A: Derivation of expression for the density of a face-centered cubic unit cell: In general, density is…

Q: Please Help Me! the last tutor gave me all wrong answers last time. DOUBLE CHECK YOUR ANSWER!!!!

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: There are 2 atoms or ions per unit cell in a body centered cubic structure. True False

A: The body centred cubic (BCC) structure, looks like this. There are 8 atoms in the corner each shared…

Q: Figure 1 shows the crystal structure of sodium chloride salt (NaCI). Let the effective radius of Na…

A:

Q: NaCl has a has a face centered cubic (fcc) structure. How many Na atoms per unit cell, Cl atoms per…

A: NaCl is an ionic crystal .  In NaCl type structure, chloride ions occupy fcc structure and sodium…

Q: Given that the density of CaO(s) is 3.34 g/cm and that the length of an edge of a unit cell is 481…

A:

Q: Gold has a face-centered cubic arrangement with a unit cell edge length of 4.08Á. How many moles of…

A:

Q: Gold (197.0 g/mol) has cubic crystals whose unit cell has an edge length of 407 pm. The density of…

A: Density: The density of the metal is defined as the mass of unit volume. The density of the gold is…

Q: adwa Some hypothetical metal has a simple cubic crystal structure. If its atomic weight is 61.25…

A: r = 0.174nm For simple cubic crystal , a= 2r      Therefore a = 2×0.174                    = 0.348nm…

Q: A pure metallic solid has an atomic radius of 1.9 Angstrom, an FCC crystal structure and has a…

A:

Q: Calculate the volume in Å3 of each of the following types of cubic unit cells if it is composed of…

A: A cubic cell is the smallest repeating unit of a crystal lattice which shows the 3D pattern of the…

Q: Assume that the diameter of a metal atom is 5 nm. What is the total volume (in nm3) occupied by the…

A: In an FCC cell, there are 8 eight atoms at the corner and 6 atoms at the face center. So, the total…

Q: 2. A fine white powder has a melting point of 155°C (relatively low). It does not dissolve in water…

A: Based on the constituent particles present in crystal lattice , crystalline solids can be classified…

Q: please help? make the answer clear

A: Number of atoms in a unit cell can be determined using the given formula,

Group 14 Elements

The following elements come under group 14 of the periodic table.