Part A An X-ray beam of A= 75.05 pm is incident on the surface of an atomic crystal. The maximum reflection occurs at an angle of 39.2 °. Calculate the separation between layers of atoms in the crystal (assume n = 1). O 37.6 pm O 119 pm O 59.4 pm O 94.8 pm

Q: 16. A hypothetical element, Le, has a body centered cubic structure with a density of 6.93 g/cm3.…

A: We have to calculate the atomic radius

Q: Molybdenum has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic weight of 95.94…

A: For BCC structure, number of atoms per unit cell = 2 Radius = 0.1363 nm Edge, a∘…

Q: Quantum numbers are used to determine the properties of .electrons True O False O Metallic bond is a…

A: Given,  Statements is :  1). Quantum numbers are used to determine the properties of electrons  2).…

Q: In the FCC crystal structure the cube edge length a 3= 2RV2 (4 R)/V3 O 4V3 R 4V5 R

A: Given  FCC crystal structure    FCC means Face centered cubic crystal structure.

Q: The lattice constant of diamond is 0.3567 nm. What is the angle between two bonds of a carbon atom…

A: Diamond has FCC crystal structure.

Q: Barium is the largest nonradioactive alkaline metal. It has a body-centered cubic unit cell and a…

A: Consider the Barium atom to be a sphere. Let R be the radius of Barium So, Volume of the…

Q: 1. What have you observed in this picture 1s 3s 4s 5s 6s 7s St 7d 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p…

A: As per our guidelines,  we have to answer only first question for a multiple question which are not…

Q: Determine the radius of an Al atom (in pm) if the density of aluminum is 2.71 g/cm3. Aluminum…

A: Density = 2.71 g/cm3. Step (2) Molar mass of Al = 27 g/mol For, FCC Z = 4 a = 2√2

Q: A hypothetical element, Le, has a body-centered cubic structure with a density of 7.27 g/cm3.…

A: Density = 7.27 g/cm3

Q: Tantalum (Ta; d = 16.634 g/cm3and M = 180.9479 g/mol) has a body-centered cubic structure with a…

A: A unit cell is the smallest repeating portion of a crystal lattice. Unit cell occurs is many…

Q: An X-ray beam of l = 71.07 pm is incident on the surface of an atomic crystal. The maximum…

A:

Q: Platinum has ΔHvap= 510.4kJ/mol and ΔSvap= 124.7 J/K•mol What is the appropriate boiling point of…

A: It is given that change in enthalpy of vaporization for platinum is 510.4 kJ/mol and change in…

Q: Which of the following statements is TRUE? Select one: CCl4(s) has a higher melting point than…

A: True statement among the above options is

Q: A hypothetical element, Le, has a body centered cubic structure with a density of 6.93 g/cm³.…

A:

Q: Which of the following represent closest packing of spheres? 11 III IV O II + IV OI + IV III+IV | +…

A:

Q: Categorize each substance with its correct solid structure. MgS ionic C12H240 [ Choose ] polystyrene…

A: These are the structure given below:

Q: atomic

A:

Q: This arrangement of atom results in the greatest stability of solid a.scc b.bcc c.fcc

A: In fcc arrangement, atoms are present at the corners as well as center of each cube face of the…

Q: A hypothetical element, Le, has a body centered cubic structure with a density of 6.93 g/cm3.…

A: Given the element, Le has a body-centered cubic(BCC) structure. Density of Le, d = 6.93 g/cm3.…

Q: hypothetical element, Le, has a body centered cubic structure with a density of 7.3 g/cm3. Calculate…

A:

Q: Niobium crystallizes in BCC structure and has a density of 8.55 g/cm^3. Calculate its atomic radius…

A: Given  Structure type = BCC density ( d ) = 8.55 gram/cm3 Atomic mass ( M )  = 93 gram/mole Atomic…

Q: A compound MX has FCC structure and has a density 6.38 g/mL. If the ionic radius of X is 1.08 A,…

A: Radii ratio range of octahedral void in fcc : 0.414 ≤ r-r+ < 0.732  For option (A) r-r+=1.081.20=…

Q: A hypothetical element, Ny, forms a face-centered cubic lattice with an atomic radius of 166 pm.…

A:

Q: 3. The number of Bravais lattices are. (a) 7. (b) 14 (c) 10

A:

Q: Which compound is most likely to have ionic forces? a.H20 b.Al203 c.PCI3 d.Xe

A: Ionic forces exist between the compounds that are formed between the atoms of significant…

Q: What is the true density of Zr, an HCP crystal, in g/cm3? Atomic Number = 40  Atomic Weight = 91.22…

A:

Q: E You are given a white substance that melts at 1500 °C. The substance is brittle and soluble in…

A: Properties of given substance Substance melts at temperature 1500°C Substance is brittle Substance…

Q: 246.05°C, while the boiling point of liquid argon (Ar) is 17. The boiling point of neon (Ne) is -…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Indicate the strongest force holding the crystals together in the following substances by putting a…

A: Since you have posted a question with multiple sub-parts, as per guidelines we will solve the first…

Q: A hypothetical element, Le, has a body centered cubic structure with a density of 6.79 g/cm3.…

A: Given that, density of body centered cubic structure (d) = 6.79 g/cm3 Atomic mass = 56.389 g/mol

Q: A hypothetical element, Ny, forms a face-centered cubic lattice with an atomic radius of 166 pm.…

A:

Q: Q4 /I Answer the following (choose three branches): A- Iron was formed at 912 ° C by the effect of…

A: For BCCNumber of atoms per unit cell = 2 Relation between edge length and radius is : r= a34Volume…

Q: Which substance is a network covalent solid? A) Carbon Dioxide, CO2 B) Diamond. C C) Mercury, Mg…

A: A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These…

Q: Shown below is one face ofa hypothetical face-centered cubic unit celI. gE ... The cell length…

A: Using Pythagoras theorem we can calculate the long side of triangle.

Q: A metal with molar mass of 99.42 g/mol crystallizes in a body-centered cube with edge length of 324…

A:

Q: Which substance forms a metallic lattice? K C (graphite) I2 MgS

A:

Q: Indicate the strongest force holding the crystals together in the following substances by putting a…

A: There are various type of intermolecular forces are present in molecules such as dipole-dipole,…

Q: sentences describe the difference in structure or the arrangement of particles of a crystalline and…

A: Answer - Crystalline solid - A crystal or crystalline solid is a solid material whose constituents…

Q: The spacing of adjacent atoms in a NaCl crystal is 0.282 nm, and the masses of the atoms are 3.82 ×…

A: Spacing of adjacent atoms,a = 0.282 nm = 2.82 x 10-10 m

Q: cion 2 Tridium (192.2 g/mol) crystalizes in a face centered cubic lattice. Iridium has a density of…

A: The relationship between density and volume is as follows,…

Q: silver forms ccp lattice and xray studies of its crystals show that the edge length of its unit cell…

A: Given that  Silver follow CCP lattice and  The edge length of unit cell = 408.6 pm = 408.6 x 10-10…

Q: 1. The chart below shows three allotropes of carbon. ALLU1HOMIC UHMS O CAKSUN These three forms have…

A: Carbon is an element which can exist in different physical forms. The capacity of C to exist in…

Q: Indicate the strongest force holding the crystals together in the following substances by putting a…

A:

Q: A hypothetical element, Le, has a body centered cubic structure with a density of 6.93 g/cm3.…

A:

Q: 2. How to find what a materials crystal structure is? (FCC, BCC or neither FCC or BCC or

A: We have to tell how to detect a material crystal structure is either FCC, BC, or neither FCC, or…

Q: The unit cell of a compound containing strontium, iron, and oxygen is shown here. –3.98 Å 3.98 Å Sr…

A: Given structure,

Q: What is the edge length of a body-centered cubic unit cell made up of atoms that each has a radius…

A: Find the edge length in BCC unit cell having r = 178 pm

Q: Choose the compound that has the lowest surface tension. (Consider intermolecular forces) Не Li Be B…

A: Answer:- This question is answered by using the simple concept of surface tension which is directly…

Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.