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Calcination

Zinc sulphide...

Question

Zinc sulphide exists in two different structural forms as zinc blende (FCC) and Wurtzite (HCP). What wil the coordination number of cation and anion in both the structure struct

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Q. In Zinc blende structure, anions are arranged in ccp and cations are present in the tetrahedral voids and only half the tetrahedral voids are occupied.
The coordination numbers of cation and anion are __________ respectively.

Q. In zinc blende structure, anions are arranged in ccp and cations are present in the tetrahedral voids and only half the tetrahedral voids are occupied.
If 'a' is the edge length of the unit cell, then for zinc blende structure the distance of closest approach between cation and anion is :

Q. The coordination number of

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S^{2 -}

ions in the zinc blende ZnS type structure is:

Z n S

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a

is the edge cell length.

Q. In zinc blende structure, anions are arranged in ccp and cations are present in the tetrahedral voids and only half the tetrahedral voids are occupied.
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\frac{r_{+}}{r_{-}}

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