Q1:An interstitial alloy prepared from two metals. metal A with the larger atomi
ID: 784836 • Letter: Q
Question
Q1:An interstitial alloy prepared from two metals. metal A with the larger atomic radius has a hexagonal closed-packed structure. What if the formula(for example:A2B,AB,AB2)of the alloy if atoms of metal B occupy the following?
All of the tetrahedral holes ......
One -half of the tetrahedral holes.......
One-half of the octahedral holes......
Q2:A number of metal fluorides adopt the fluorite structure in which the fluorite ions occupy all the tetrahedral holes in a face-centered cubic arry of metal ions. For at least one(maybe more) of the highlighted metallic elements in the figure, this crystal structure should not be possible. Which one(s)?
Mg
Ca
Sr
Ba
Cs
Q3:Calculate the density of CsCl? (CsCl described as body-centered cubic, 412pm)
Explanation / Answer
All of the tetrahedral holes ...... AB2
One -half of the tetrahedral holes......AB
One-half of the octahedral holes......A2B
Mg
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