(e) Platinum has an FCC crystal structure. The atomic radius of platinum is 0.1387 nm. An X-ray diffractometer with a monochromatic radiation of wavelength 0.1542 nm is used is used to analyze a sample of the metal. i. Which of the following planes will produce a peak: (110), (211), or (113)? ii. For the plane producing a peak, calculate its diffraction angle.

(e) Platinum has an FCC crystal structure. The atomic radius of platinum is 0.1387 nm. An X-ray diffractometer with a monochromatic radiation of wavelength 0.1542 nm is used is used to analyze a sample of the metal. i. Which of the following planes will produce a peak: (110), (211), or (113)? ii. For the plane producing a peak, calculate its diffraction angle.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter24: Introduction To Spectrochemical Methods

Section: Chapter Questions

Problem 24.12QAP

See similar textbooks

Similar questions

How does fluorescence work in bulk semiconductors?
3. Discuss the relationship of refractive index to molecular polarizability.
Lead is determined by atomic absorption at 283.3 nm, whereas it is determined at 405.8 nm by flame emission. Explain why the most sensitive line is different for these two methods.
The arrangement of ions, atoms or molecules in crystals are best determined by which instrumental method? A) NMR b) mass spectroscopy c) atomic absorption spectroscopy d) x-ray diffraction
This shows the spectrum of visible light. From what you have learned about excitation and emission of 'flurophores' used in fluorescence microscopy, answer this question: A fluorophore that is 'excited' by light with a wavelength of 570 nanometers (nm), would, by necessity, 'emit' light somewhere in this range ___. (There are two choices.) Light, the visible spectrum violet Indigo 675 r frequency 750 (THE) wavelength 400 photon 3.1 energy (1) Encyclopedia Britannica, Inc. 445 2.8 1 blue T 630 475 1 2.6 1 groen 500 510 24 1 yellow orange 525 510 570 590 1 2.2 21 400nm-569nm Q571nm-780nm red 460 650 1.9 380 780 1.6 in terahertz (THz: 1 THz - 1x102 cycles per second. in nanometres (nm); 1nm 1x10 metre. in electron volts (V)
In an x-ray diffraction measurement of BCC Nb, the observed angle (2Θ) for the (211) set of planes occurs at 75.90 degrees (1st order) and a monochromatic x-ray source at λ = 0.1659 nm is used. Compute:a) the interplanar spacing of the (211) set of planes,b) the atomic radius of Nb,c) the anticipated 1st order observed angle (2Θ) for the (111) lattice planes in Nb.d) Estimate the relative intensities observed for the (211) and the (111) diffraction peaks in Nb. Describe your reasoning.
In the figure below we present two curves. The sample to multilayers of graphene. The technician who obtained the spectra does not know how many layers each curve corresponds to. But you do. answer the following: a. With what technique were the spectra obtained?
a) Find the Linear density for FCC [111] direction assuming the atomic radius R=0.230mm b) Find the Linear density for BCC [110] direction assuming the atomic radius R-0.135mm c)Find the Planar density for FCC (110) plane assuming the atomic radius R-0.135mm
A 400 Å thick film of ZrO2 (n = 2.10) is deposited on glass (n = 1.50). Determine the normal reflectance for sodium light of wavelength 589.3 nm. Ans: 17.4%.
Why are the observed configurations of, for example, trigonal bipyramidal structures sometimes different for different measuring techniques?
a) The refractive index (μ) of water is found to have the values 12.9,12.5,12.3 and 11.8.Calculate the standard deviation for the refractive index of water.
(d) The Beer-Lambert law states that the absorbance (A) of light by a solution in a cuvette is given by: A = ln == ECL In == where lo is the incident light intensity, is the transmitted light intensity, e is the molar absorptivity, c is the concentration of the solution, and Lis the path length of the cuvette. (1) Light with a wavelength of 800 nm is passed through a cuvette containing a solution of Coumarin dye. After passing through the cuvette, the light intensity was reduced to 10% of its initial value. What is the absorbance of the solution of Coumarin dye? (1) The concentration of the Coumarin dye is 0.004 mol dm, and the cuvette has a path length of 1 cm. What is the molar absorptivity of Coumarin dye at 800 nm, in units of m² mor¹? (T) The molar absorptivity of Coumarin dye at 400 nm is three times larger than at 800 nm. How would the absorbance of the solution change, when measured with 400 nm light rather than 800 nm light?