13. Liquids, Solids & Intermolecular Forces

Body Centered Cubic Unit Cell

11.3 Structures of Solids | General Chemistry

An unknown metal is found to have a density of 7.8748 g/cm3
and to crystallize in a body-centered cubic lattice. The edge of the
unit cell is 0.28664 nm. Calculate the atomic mass of the metal.

Tungsten crystallizes in a body-centered cubic unit cell with 
an edge length of 317 pm. What is the length in picometers 
of a unit-cell diagonal that passes through the center atom?

Identify each of the following kinds of packing: 
(d) <img src="https://lightcat-files.s3.amazonaws.com/problem_images/aed9ca13c13d453e-1670951252379.jpg" alt="" />

Unit Cell Chemistry   Simple Cubic, Body Centered Cubic, Face Centered Cubic Crystal Lattice Structu

Gen Chem II - Lec 6 - Crystal Lattices of Solid Structures

Determine the number of atoms per unit cell for each metal. <img src="https://lightcat-files.s3.amazonaws.com/problem_images/7b1436a459144bc8-1659625224360.jpg" alt="" /> (b) Tungsten

Potassium metal crystallizes in a body-centered cubic structure. 
Draw one unit cell, and try to draw an electron-dot 
structure for bonding of the central K atom to its nearestneighbor 
K atoms. What is the problem?

Calcium crystallizes in a body-centered cubic structure at 467°C. 
(a) How many Ca atoms are contained in each unit cell?

Cesium chloride crystallizes in a cubic unit cell with Cl- ions 
at the corners and a Cs+ ion in the center. Count the numbers 
of + and - charges, and show that the unit cell is electrically 
neutral.

Molybdenum crystallizes with the body-centered unit cell. The radius of a molybdenum atom is 136 pm. Calculate the edge length of the unit cell and the density of molybdenum

What is the coordination environment of the K+ ions in the
fullerene-based superconductor K3C60?

Sodium has a density of 0.971 g>cm3 and crystallizes with a 
body-centered cubic unit cell. What is the radius of a sodium 
atom, and what is the edge length of the cell in picometers?

A cube-shaped crystal of an alkali metal, 1.62 mm on an edge, 
was vaporized in a 500.0 mL evacuated flask. The resulting 
vapor pressure was 12.5 mm Hg at 802 °C. The structure of 
the solid metal is known to be body-centered cubic. 
(c) What are the densities of the solid and the vapor in 
g>cm3?

Body Centered Cubic Crystal Structure

Thallium (I) iodide crystallizes with the same structure as CsCl, a compound with a body-centered cubic structure. The edge length of the unit cell of Tl is 4.20 angstroms. Calculate the ionic radius of Tl+. The ionic radius of I– is 2.16 angstroms.

The edge of a body-centered cubic unit cell of an element Y was found to be 3.16×10-8 cm. The density of the element is 19.35 g/cm3. What is the approximate molar mass of Y?

The Structure of Crystalline Solids

If a protein can be induced to crystallize, its molecular structure 
can be determined by X-ray crystallography. Protein crystals, 
though solid, contain a large amount of water molecules 
along with the protein. The protein chicken egg-white lysozyme, 
for instance, crystallizes with a unit cell having angles of 
90° and with edge lengths of 7.9 * 103 pm, 7.9 * 103 pm, 
and 3.8 * 103 pm. There are eight molecules in the unit 
cell. If the lysozyme molecule has a molecular weight of 
1.44 * 104 and a density of 1.35 g>cm3, what percent of the 
unit cell is occupied by the protein?

The unit cell of a compound containing Co and O has a unit
cell shown below. The Co atoms are on the corners, and the O
atoms are completely within the unit cell. What is the empirical
formula of this compound? What is the oxidation state of
the metal?
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/3ba4bad6a3d3e3fc-1665590657470.jpg" alt="" />

Barium has a body-centered cubic structure. If the atomic radius of barium is 222 pm, calculate the density of solid barium.

Sodium metal (atomic weight 22.99 g>mol) adopts a
body-centered cubic structure with a density of 0.97 g>cm3.
(b) If sodium didn’t react so vigorously, it could
float on water. Use the answer from part (a) to estimate
the density of Na if its structure were that of a cubic close-packed
metal. Would it still float on water?

Simple Cubic Unit Cell Concept 1

Body Centered Cubic Unit Cell Example 1

A cube-shaped crystal of an alkali metal, 1.62 mm on an edge,
was vaporized in a 500.0 mL evacuated flask. The resulting
vapor pressure was 12.5 mm Hg at 802 °C. The structure of
the solid metal is known to be body-centered cubic.
(b) Use the data in Figure 5.19 to identify the alkali metal.

Barium has a density of 3.59 g/cm3 and crystallizes with the body-centered cubic unit cell. Calculate the radius of a barium atom.

Iron crystallizes in a body-centered cubic unit cell with an 
edge length of 287 pm. Iron metal has a density of 7.86 g>cm3 
and a molar mass of 55.85 g. Calculate a value for Avogadro’s 
number.

Calcium crystallizes in a face-centered cubic unit cell at 
room temperature that has an edge length of 5.588 Å. 
(b) Calculate the density of Ca metal at this temperature.

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1. Intro to General Chemistry

2. Atoms & Elements

3. Chemical Reactions

4. BONUS: Lab Techniques and Procedures

5. BONUS: Mathematical Operations and Functions

6. Chemical Quantities & Aqueous Reactions

7. Gases

8. Thermochemistry

9. Quantum Mechanics

10. Periodic Properties of the Elements

11. Bonding & Molecular Structure

12. Molecular Shapes & Valence Bond Theory

14. Solutions

15. Chemical Kinetics

16. Chemical Equilibrium

17. Acid and Base Equilibrium

18. Aqueous Equilibrium

19. Chemical Thermodynamics

20. Electrochemistry

21. Nuclear Chemistry

22. Organic Chemistry

23. Chemistry of the Nonmetals

24. Transition Metals and Coordination Compounds

[BOOK CHEM] Clutch Version

Body Centered Cubic Unit Cell contains 2 atoms total.

Phase Diagrams

Phase&nbsp;Diagrams show&nbsp;what&nbsp;effect&nbsp;temperature and pressure have&nbsp;on a pure substance in a closed system without any air.

Intermolecular Forces and Physical Properties

Intermolecular forces influence physical properties. &nbsp;We will look at direct and indirect relationships.

Face Centered Cubic Unit Cell

Face Centered Cubic Unit Cell contains 4 atoms in total.

Heating and Cooling Curves

Heating and Cooling Curves represent amount of heat (q) absorbed or released by a substance during phase changes.

Clausius-Clapeyron Equation

The Clausius-Clapeyron Equation establishes a quantitative relationship between vapor pressure and temperature.&nbsp;

Molecular Polarity

Polarity of chemical bonds happen in molecules when there is an unequal sharing of electrons.&nbsp;

Intermolecular Forces

Intramolecular Forces are the bonding forces within a molecule. Intermolecular Forces are the attractive forces between 2 molecules.

Simple Cubic Unit Cell

Simple Cubic Unit Cell is the least complex&nbsp;cubic unit cell and contains only 1 atom.

Atomic, Ionic, and Molecular Solids

<div dir="auto"><div contenteditable="true"dir="auto"spellcheck="true">Crystalline solids represent structures with well-organized patterns and shapes. Amorphous solids represent structures that lack an organized pattern or shape.&nbsp;</div></div>

Crystalline Solids

Crystalline Solids are composed of unit cells, crystal lattice and lattice point.

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