Question
The first order Bragg reflection angle from the (111) planes in an fcc metal is 19.2° for an x-ray beam with λ = 1.54 Å. Calculate the density of the metal if its atomic weight is 26.98 u.
Answer :
Word Count : 458
To calculate the density of the metal, we can use the Bragg's law and the relationship between the density and atomic structure. Here’s how to proceed step-by-step: ### Step 1: Use Bragg’s Law Bragg’s law is given by: \[ n \lambda = 2d \sin \theta \] Where: - \( n \) is the order of the reflection (we take \( n = 1 \) for the first-order reflection), - \( \lambda \) is the wavelength of ________ _______ ________ _______ _____ ________ ________ __________ ________ ______ _______ ________.
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To calculate the density of the metal, we can use the Bragg's law and the relationship between the density and atomic structure. Here’s how to proceed step-by-step: ### Step 1: Use Bragg’s Law Bragg’s law is given by: \[ n \lambda = 2d \sin \theta \] Where: - \( n \) is the order of the reflection (we take \( n = 1 \) for the first-order reflection), - \( \lambda \) is the wavelength of ________ _______ ________ _______ _____ ________ ________ __________ ________ ______ _______ ________.
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