MATERIAL SCIENCE What is the atomic weight of Allegronium? What is the volume of
ID: 978387 • Letter: M
Question
MATERIAL SCIENCE
What is the atomic weight of Allegronium? What is the volume of the unit cell in nm cubed? What is the d-spacing of the (222) plane in nm? How many atoms are in the unit cell?
Since you have studied MSE 2100 under the venerable Dr. Skaar, yo percent or two of your answer, it is probably the answer. Discrepanci Crystal System FCC Density 7.23 g/cmA3 x-ray Wavelength 0.154051 nm 2 theta 32.14 37.28 53.74 64.01 67.23 79.47 (hkl) (200) (220) (311) (222) (400) What is the atomic weight of Allegronium? " What is the volume of the unit cell in nm3 What is the d-spacing of the (222) plane in nm? How many atoms are "in the unit cell?Explanation / Answer
a) There is no such element exists under the name Allegronium.
Let us asssume, atomic weight of Allegronium = M g/mol
b) Given that FCC lattice.
No of units in FCC unit cell = 4
density = [M x no of units in FCC unit cell] /[ volume x avogadro number]
Then,
volume = [M x no of units in FCC unit cell] /[ density x avogadro number]
c) volume of the unit cell, V = a3
edge length a = (V)1/3
d- spacaing of the pane (2,2,2) = a/ (h2+k2+l2)1/2
= a/ (22+22+22)1/2
= a/ (8)1/2
d)
no of atoms in the unit cell = 4
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