CHEMISTRY-W/MASTERING CHEMISTRY ACCESS
8th Edition
ISBN: 9780135205068
Author: Robinson
Publisher: PEARSON
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Question
Chapter 12, Problem 12.14P
Interpretation Introduction
Interpretation:
The correct match of pictures with their particle size of
Concept introduction:
The quantum dots of any solids can be defined as the semiconductor particles that have size in nanoparticle range and changes color with change in diameter of particles. Since size of nanoparticle is intermediate between the bulk solids and atoms thus the spacing between electronic energy also has intermediate value between large for atoms and continuous band for bulk solids. These quantum dots are used in solar cells, LEDs, quantum computing, medical imaging.
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Check out a sample textbook solutionStudents have asked these similar questions
Consider spherical nanoparticles of copper with diameter of 10nm and 100nm
A) Calculate the total number of atoms in the particles,considering the lattice parameter of bulk Cu.
2. A spherical metallic nanoparticle of diameter di = 100 nm melts at Tmi = 900 K. A smaller
spherical nanoparticle of the same metal, of diameter dz = 50 nm, melts at Tm2 = 800 K.
a) Explain why the smaller nanoparticle melts at a lower temperature.
b) Calculate the melting point of the metal in bulk form.
Sample Exercise 6: Empirical Formula and Density: Ionic Solid
The unit cell of a binary compound of copper and oxygen is shown here. Given this image and
the ionic radii rcut = 0.74 Å and ro² = 1.26 Å, (a) determine the empirical formula of this
compound, (b) determine the coordination numbers of copper and oxygen, (c) estimate the
length of the edge of the cubic unit cell, and (d) estimate the density of the compound.
Solution
(a) To determine the empirical formula we need to determine how
many of each type of ion there are per unit cell.
O: 8(1/8) + 1 = 2 0²-ions in the unit cell.
Cu: 4(1) = 4 Cut ions in the unit cell.
Empirical Formula:
Cu₂O
(b) If we can visually determine the coordination number of one of the ions, we can use
Equation 12.1 to determine the coordination number of the other ion.
Number of cations per formula unit
Number of anions per formula unit
anion coordination number
cation coordination number
Cation coordination number = anion coordination number
Copper…
Chapter 12 Solutions
CHEMISTRY-W/MASTERING CHEMISTRY ACCESS
Ch. 12 - Calcium metal crystallizes in a cubic...Ch. 12 - Polonium metal crystallizes in a simple cubic...Ch. 12 - Polonium metal crystallizes in a simple cubic...Ch. 12 - The density of a sample of metal "as measured to...Ch. 12 - Zinc sulfide crystallizes in the following cubic...Ch. 12 - Prob. 12.6ACh. 12 - Prob. 12.7PCh. 12 - Prob. 12.8ACh. 12 - Prob. 12.9PCh. 12 - Prob. 12.10A
Ch. 12 - Prob. 12.11PCh. 12 - Prob. 12.12ACh. 12 - Prob. 12.13PCh. 12 - Prob. 12.14PCh. 12 - Prob. 12.15PCh. 12 - Prob. 12.16PCh. 12 - Prob. 12.17PCh. 12 - Identify each of the following kinds of packingCh. 12 - Prob. 12.19CPCh. 12 - Titanium oxide crystallizes in the following cubic...Ch. 12 - Prob. 12.21CPCh. 12 - Prob. 12.22CPCh. 12 - Prob. 12.23CPCh. 12 - Prob. 12.24CPCh. 12 - Prob. 12.25CPCh. 12 - Prob. 12.26SPCh. 12 - Prob. 12.27SPCh. 12 - Prob. 12.28SPCh. 12 - Prob. 12.29SPCh. 12 - Prob. 12.30SPCh. 12 - Prob. 12.31SPCh. 12 - Diffraction of X rays with =154.2 pm at an angle...Ch. 12 - Diffraction of X rays with =154.2 pm at an angle...Ch. 12 - Which of the four kinds of packing used by metals...Ch. 12 - What is a unit cell? How many atoms are in one...Ch. 12 - Copper crystallizes in a face-centered cubic unit...Ch. 12 - Lead crystallizes in a cubic unit cell with anedge...Ch. 12 - Prob. 12.38SPCh. 12 - Tungsten crystallizes in a body-centered cubic...Ch. 12 - Prob. 12.40SPCh. 12 - Prob. 12.41SPCh. 12 - Titanium metal has a density of and an atomic...Ch. 12 - Calcium metal has a density of 1.55 g/cm3 and...Ch. 12 - The atomic radius of Pb is 175 pm, and the density...Ch. 12 - The density of a sample of metal was measured to...Ch. 12 - If a protein can be induced to crystallize, its...Ch. 12 - The molecular structure of a scorpion toxin, a...Ch. 12 - Iron crystallizes in a body-centered cubic unit...Ch. 12 - Silver metal crystallizes in a face-centered cubic...Ch. 12 - Sodium hydride, NaH, crystallizes in a...Ch. 12 - Cesium chloride crystallizers in a cubic unit cell...Ch. 12 - If the edge length of an NaH unit cell is 488 pm,...Ch. 12 - The edge length of a CsCI unit cell (Problem...Ch. 12 - Silicon carbide, SiC, is a covalent network solid...Ch. 12 - Prob. 12.55SPCh. 12 - Prob. 12.56SPCh. 12 - Prob. 12.57SPCh. 12 - Prob. 12.58SPCh. 12 - Prob. 12.59SPCh. 12 - Prob. 12.60SPCh. 12 - Prob. 12.61SPCh. 12 - Prob. 12.62SPCh. 12 - Prob. 12.63SPCh. 12 - Prob. 12.64SPCh. 12 - Prob. 12.65SPCh. 12 - Prob. 12.66SPCh. 12 - Prob. 12.67SPCh. 12 - Prob. 12.68SPCh. 12 - Prob. 12.69SPCh. 12 - Prob. 12.70SPCh. 12 - Prob. 12.71SPCh. 12 - Prob. 12.72SPCh. 12 - Prob. 12.73SPCh. 12 - Prob. 12.74SPCh. 12 - Prob. 12.75SPCh. 12 - Prob. 12.76SPCh. 12 - Prob. 12.77SPCh. 12 - Prob. 12.78SPCh. 12 - Prob. 12.79SPCh. 12 - Prob. 12.80SPCh. 12 - Prob. 12.81SPCh. 12 - Prob. 12.82SPCh. 12 - Prob. 12.83SPCh. 12 - Prob. 12.84SPCh. 12 - Prob. 12.85SPCh. 12 - Prob. 12.86SPCh. 12 - Prob. 12.87SPCh. 12 - Prob. 12.88SPCh. 12 - Prob. 12.89SPCh. 12 - Prob. 12.90SPCh. 12 - Prob. 12.91SPCh. 12 - Prob. 12.92SPCh. 12 - Prob. 12.93SPCh. 12 - Prob. 12.94SPCh. 12 - Prob. 12.95SPCh. 12 - Prob. 12.96SPCh. 12 - Prob. 12.97SPCh. 12 - Prob. 12.98SPCh. 12 - Prob. 12.99SPCh. 12 - Prob. 12.100SPCh. 12 - Prob. 12.101SPCh. 12 - A photovoltaic cell contains a p-n junction that...Ch. 12 - Prob. 12.103SPCh. 12 - Prob. 12.104SPCh. 12 - Prob. 12.105SPCh. 12 - Prob. 12.106SPCh. 12 - Prob. 12.107SPCh. 12 - Prob. 12.108SPCh. 12 - Prob. 12.109SPCh. 12 - Prob. 12.110SPCh. 12 - Prob. 12.111SPCh. 12 - Prob. 12.112SPCh. 12 - Prob. 12.113SPCh. 12 - Prob. 12.114SPCh. 12 - Prob. 12.115SPCh. 12 - Prob. 12.116SPCh. 12 - Prob. 12.117SPCh. 12 - Prob. 12.118SPCh. 12 - Prob. 12.119SPCh. 12 - Prob. 12.120SPCh. 12 - Prob. 12.121SPCh. 12 - Prob. 12.122SPCh. 12 - Prob. 12.123SPCh. 12 - Prob. 12.124SPCh. 12 - Prob. 12.125SPCh. 12 - Prob. 12.126SPCh. 12 - Prob. 12.127SPCh. 12 - Prob. 12.128SPCh. 12 - Prob. 12.129SPCh. 12 - Prob. 12.130SPCh. 12 - Prob. 12.131SPCh. 12 - Prob. 12.132SPCh. 12 - Prob. 12.133SPCh. 12 - Prob. 12.134MPCh. 12 - Prob. 12.135MPCh. 12 - Prob. 12.136MPCh. 12 - Prob. 12.137MPCh. 12 - Assume that 1588 g of an alkali metal undergoes...Ch. 12 - Prob. 12.139MPCh. 12 - Prob. 12.140MPCh. 12 - Prob. 12.141MPCh. 12 - Prob. 12.142MPCh. 12 - Prob. 12.143MPCh. 12 - Prob. 12.144MP
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Similar questions
- Nanotechnology, or technology utilizing 1100 nm sized particles, has rapidly expanded in the past few decades, with potential applications ranging across far-reaching fields such as electronics, medicine, biomaterials, and consumer products, to name a few. One of the primary advantages of nanoparticles is the presence of large surface/mass ratios, resulting in enhanced surface activities compared to bulk materials. a Use the density of silver (10.49 g/cm3) to determine the number of Ag atoms in a spherical 20.-nm silver particle. b In the crystalline metallic environment, the measured radii of silver atoms has been measured to be 144 pm. Use this to calculate the atomic packing fraction of a 20.-nm silver particle. In other words, calculate the ratio of the volume taken up by Ag atoms to the volume of the entire nanoparticle. c Based on the result of part (b), silver conforms to which type of cubic crystal lattice? A simple cubic B body-centered cubic C face-centered cubic d A cubic Ag ingot having a mass of 5.0-g is processed to form a batch of 20.-nm Ag nanoparticles. Calculate the ratio of the surface area provided by the batch of nanoparticles to the surface area of the initial cube of Ag.arrow_forwardDescribe the structural units in (a) C (graphite) (b) SiC (c) FeCl2 (d) C2H2arrow_forwardsolve i, ii and iii please. Given caesium has a body-centred cube with density of 1.93 g/cm3. i. Determine the lattice constant of caesium if the molar mass of caesium is 132.9 g mol-1. (NA = 6.022 x 1023 atom mol-1) ii. Assuming the body-centred caesium is replaced by an anion, X, suggest the type of structure of this derivative. iii. Determine coordination environment for both ions.arrow_forward
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