Which one of the following is true(only one is true). Explain each one as to whe

Question

Which one of the following is true(only one is true). Explain each one as to whether it is false or true.

a) In MgO, the chocie of which interstices(sites) are occupied by the manganese cations is dictated by the relative sizes of the anions and cations.

b) In NaCl, the chocie of which interstices are occupied by Cl- is dictated by the relative sizes of Na+ and Cl-.

c) In the unit cell of FeO, the number of terahedral interstices is two times the number of octahedral interstices.

d) In the unit cell of FeO, the number of nearest neighbor atoms surrounding a tetrahedral interstice is one half the number of nearest neighbow atoms surrounding an octahedral interstice.

e) Wear-resistant dies are often made from polycrystalline diamond, WC, and cement.

Explanation / Answer

a)true

b)true

c)true

d)true

e)false

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