13. Liquids, Solids & Intermolecular Forces

Simple Cubic Unit Cell

The Structure of Crystalline Solids

(b) What is the coordination number 
of each cannonball in the interior of the stack? 
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/cd20bcd0d0eb265c-1668617219261.jpg" alt="" />

The coordination number for the Al3+ ion is typically between 
four and six. Use the anion coordination number to 
determine the Al3 + coordination number in the following 
compounds: (b) Al2O3 where the oxygen ions are six coordinate.

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

Polonium crystallizes with a primitive cubic structure. It has a density of 9.4 g/cm3, a radius of 167 pm, and a molar mass of 209 g/mol. Calculate the number of atoms in one mole of Polonium.

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

Simple Cubic Unit Cell Example 1

Imagine the primitive cubic lattice. Now imagine pushing
on top of it, straight down. Next, stretch another face by
pulling it to the right. All angles remain 90°. What kind of
primitive lattice have you made?
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/66d27a6d325ab3db-1666016820711.jpg" alt="" />

Simple Cubic Crystal Structure

11.3 Structures of Solids | General Chemistry

The coordination number for the Al3+ ion is typically between
four and six. Use the anion coordination number to
determine the Al3 + coordination number in the following
compounds: (c) AlN where the nitride ions are four coordinate.

Imagine the primitive cubic lattice. Now imagine grabbing
the top of it and stretching it straight up. All angles remain
90. What kind of primitive lattice have you made?
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/9f0e3fb3e519e47f-1665764360651.jpg" alt="" />

Which of the three-dimensional primitive lattices has 
a unit cell where none of the internal angles is 90? 
(a) Orthorhombic, (b) hexagonal, (c) rhombohedral, 
(d) triclinic, (e) both rhombohedral and triclinic.

Identify each of the following kinds of packing:
(b) <img src="https://lightcat-files.s3.amazonaws.com/problem_images/af5cf87b923c72a7-1671426250285.jpg" alt="" />

Consider the unit cells shown here for three different structures 
that are commonly observed for metallic elements. 
(b) Which structure(s) corresponds to the least 
dense packing of atoms? 
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/6368352164ae08ad-1666016179266.jpg" alt="" />

Plonium crystallizes with a simple cubic structure. It has a density of 9.3 g/cm3, a radius of 167 pm, and a molar mass of 209 g/mol. Use these data to calculate Avogadro’s number (the number of atoms in one mole).

"The diameter of a rubidium atom is 495 pm We will consider
two different ways of placing the atoms on a surface. In arrangement
A, all the atoms are lined up with one another
to form a square grid. Arrangement B is called a close-packed
arrangement because the atoms sit in the “depressions”
formed by the previous row of atoms:
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/10da0ddd98fb8d95-1661363952053.jpg" alt="" />
(c) If extended to three dimensions, which
arrangement would lead to a greater density for Rb metal?"

"The diameter of a rubidium atom is 495 pm We will consider
two different ways of placing the atoms on a surface. In arrangement
A, all the atoms are lined up with one another
to form a square grid. Arrangement B is called a close-packed
arrangement because the atoms sit in the “depressions”
formed by the previous row of atoms:
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/c5753b089b49b246-1661362613071.jpg" alt="" />
(c) By what factor has the number
of atoms on the surface increased in going to arrangement B
from arrangement A?

The coordination number for the Al3+ ion is typically between
four and six. Use the anion coordination number to
determine the Al3 + coordination number in the following
compounds: (a) AlF3 where the fluoride ions are two coordinate.

The unit cell of nickel arsenide is shown here. (b) What is the empirical 
formula? 
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/79ffbb0de439ee6a-1666014351407.jpg" alt="" />

Determine the number of atoms per unit cell for each metal. <img src="https://lightcat-files.s3.amazonaws.com/problem_images/5105ee65b4db2717-1659633531639.jpg" alt="" /> (a) Polonium

Assume that 1.588 g of an alkali metal undergoes complete 
reaction with the amount of gaseous halogen contained 
in a 0.500 L flask at 298 K and 755 mm Hg pressure. In 
the reaction, 22.83 kJ is released 1ΔH = -22.83 kJ2. The 
product, a binary ionic compound, crystallizes in a unit cell 
with anions in a face-centered cubic arrangement and with 
cations centered along each edge between anions. In addition, 
there is a cation in the center of the cube. 
(c) Sketch a space-filling, head-on view of the unit cell, 
labeling the ions. Are the anions in contact with one 
another?

The unit cell of a compound containing potassium, aluminum,
and fluorine is shown here. (a) What type of lattice
does this crystal possess (all three lattice vectors are mutually
perpendicular)?
<img src="https://lightcat-files.s3.amazonaws.com/problem_images/cd6d35258486bb03-1668628100799.jpg" alt="" />

Simple Cubic Unit Cell Concept 1

An oxide of rhenium crystallizes with the unit cell shown here (rhenium=gray; oxygen=red). What is the formula of the oxide? <img src="https://lightcat-files.s3.amazonaws.com/problem_images/1044e248ff42895d-1659633450817.jpg" alt="" />

Learn the toughest concepts covered in Chemistry with step-by-step video tutorials and practice problems by world-class tutors

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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

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 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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