Question

Which set of following characteristics for ZnS crystal is correct?
(a) Coordination number (4 : 4); ccp; Zn⁺⁺ ion in the alternate tetrahedral voids
(b) Coordination number (6 : 6); hcp; Zn⁺⁺ ion in all tetrahedral voids.
(c) Coordination number (6 : 4); hcp; Zn⁺⁺ ion in all octahedral voids
(d) Coordination number (4 : 4); ccp; Zn⁺⁺ ion in all tetrahedral voids.

Answer 1

Answer :

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 Which set of following characteristics for ZnS crystal is correct?

(a) Coordination number (4 : 4); ccp; Zn⁺⁺ ion in the alternate tetrahedral voids

(b) Coordination number (6 : 6); hcp; Zn⁺⁺ ion in all tetrahedral voids.

(c) Coordination number (6 : 4); hcp; Zn⁺⁺ ion in all octahedral voids

(d) Coordination number (4 : 4); ccp; Zn⁺⁺ ion in all tetrahedral voids.

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The correct option is (b) :Coordination number (6 : 6); hcp; Zn⁺⁺ ion in all tetrahedral voids

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Answer 2

Explanation:

Ans : a Zns has alternate the due to which zn²+ and s²- has a coordination no.(4:4