13. Liquids, Solids & Intermolecular Forces
Crystalline Solids
13. Liquids, Solids & Intermolecular Forces
Crystalline Solids - Video Tutorials & Practice Problems
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Crystalline Solids are composed of unit cells, crystal lattice and lattice point.
Crystalline Solids
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Crystalline Solids Concept 1
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Crystalline Solids Example 1
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Crystalline Solids Concept 2
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As complexity increases, coordination number and packing efficiency increase as well.
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PRACTICE PROBLEMS AND ACTIVITIES (55)
- Two solids are shown below. One is a semiconductor and one is an insulator. Which one is which? Explain your r...
- Diffraction of X rays with l = 131.5 pm occurred at an angle of 25.5 degrees by a crystal of aluminum. Assumi...
- For each of the two-dimensional structures shown here (a) draw the unit cell (i) (ii)
- Which arrangement of cations (yellow) and anions (blue) in a lattice is the more stable? Explain your reasonin...
- Which of these molecular fragments would you expect to be more likely to give rise to electrical conductivity?...
- The following diagrams represent the electron population of molecular orbitals for different substances. What ...
- The electronic structure of a doped semiconductor is shown here. (c) Which region of the diagram represents th...
- The molecular orbital diagram of a doped semiconductor is shown below. If the semiconductor is silicon, does ...
- Shown here are cartoons of two different polymers. Which one would have the higher melting point?
- The accompanying image shows photoluminescence from four different samples of CdTe nanocrystals, each embedded...
- If the band-gap energy of a gallium phosphide (GaP) semiconductor is 222 kJ/mol, calculate the wavelength of ...
- A superconductor is a material that loses all electrical resistance below a characteristic temperature called ...
- (b) Now draw a picture that represents an amorphous solid at the atomic level.
- (a) Draw a picture that represents a crystalline solid at the atomic level.
- Two patterns of packing for two different circles of the same size are shown here. For each structure (b) dete...
- The following diagrams show the electron populations of the bands of MO energy levels for four different mate...
- The following diagrams show the electron populations of the bands of MO energy levels for four different mater...
- Two patterns of packing two different circles of the same size are shown here. For each structure (c) determin...
- The following diagram represents the electron population of the bands of MO energy levels for elemental silico...
- Diagrams (1) and (2) are energy-level diagrams for two different LEDs. One LED emits red light, and the other...
- List the four main classes of crystalline solids, and give a specific example of each.
- An X-ray beam with l = 154 pm incident on the surface of a crystal produced a maximum reflection at an angle o...
- An increase in temperature causes most metals to undergo thermal expansion, which means the volume of the met...
- Which solid would you expect to have little or no band gap? a. Zn(s) b. Si(s) c. As(s)
- Which solid would you expect to have the largest band gap? a. As(s) b. Sb(s) c. Bi(s)
- How many molecular orbitals are present in the conduction band of a lithium crystal with a mass of 11.2 g?
- A substance has a band gap of 6.9 eV at 273 K. Is this substance best classified as an insulator, a semiconduc...
- Indicate if each solid forms an n-type or a p-type semiconductor. b. germanium doped with antimony
- Does a photon of red light with a frequency of 4.29 * 1014 Hz have sufficient energy to promote an electron fr...
- For each of the following pairs of semiconductors, which one will have the larger band gap: (a) CdS or CdTe?
- If you want to dope GaAs to make an n-type semiconductor with an element to replace Ga, which element(s) woul...
- Cadmium telluride is an important material for solar cells. (d) With respect to silicon, does CdTe absorb a ...
- Cadmium telluride is an important material for solar cells. (b) What wavelength of light would a photon of th...
- Tell what is meant by each of the following terms. (c) Band gap
- Draw the bands of MO energy levels and the electron population for: (a) A semiconductor (b) An electrical in...
- Classify the following semiconductors as n-type or p-type. (a) Si doped with In (b) Ge doped with Sb (c) Gr...
- X-ray diffractometers often use metals that have had their core electrons excited as a source of X-rays. Consi...
- Arrange the following materials in order of increasing electrical conductivity. (a) Cu (b) Al2O3 (c) Fe (...
- An LED produces light only when the n- and p-type semiconductors are connected to the proper terminals of a ...
- What are the main differences between an LED and a photovoltaic cell?
- CdS has a band gap of 2.4 eV. If large crystals of CdS are illuminated with ultraviolet light, they emit ligh...
- CdS has a band gap of 2.4 eV. If large crystals of CdS are illuminated with ultraviolet light, they emit light...
- CdS has a band gap of 2.4 eV. If large crystals of CdS are illuminated with ultraviolet light, they emit ligh...
- Considering only electronegativity, rank the LED semiconductors made of solid solutions in order of increasin...
- Gallium arsenide, a material used to manufacture laser printers and compact disc players, has a band gap of 1...
- We will see in Chapter 12 that semiconductors are materials that conduct electricity better than nonmetals but...
- We will see in Chapter 12 that semiconductors are materials that conduct electricity better than nonmetals but...
- Looking at Figure 12.27 identify the coordination numbers of the Cu, Y, and Ba atoms.
- Energy bands are considered continuous due to the large number of closely spaced energy levels. The range of e...
- In their study of X-ray diffraction, William and Lawrence Bragg determined that the relationship among the wa...
- Germanium has the same structure as silicon, but the unit cell size is different because Ge and Si atoms are ...
- Europium(II) oxide is a semiconductor with a band gap of 108 kJ/mol. Below 69 K, it is also ferromagnetic, me...
- The mineral wustite is a nonstoichiometric iron oxide with the empirical formula FexO, where x is a number sl...
- Which of these molecular fragments would you expect to be more likely to give rise to electrical conductivity?
- Solids made of atoms or molecules arranged in no particular order are called ___.