MHT CET Chemistry question

Not in JEE Main or NEET syllabus

Which set of characteristics of ZnS crystal is correct ?

(A)Coordination number (4 : 4); ccp; ions in the alternate tetrahedral voidsCorrect
(B)Coordination number (6 : 6); hcp; ions in all tetrahedral voids
(C)Coordination number (6 : 4); hcp; ions in all octahedral voids
(D)Coordination number (4 : 4); ccp; ion in all tetrahedral voids

Answer: (A)

Solution

Zinc blende (ZnS) has ccp ions with coordination number 4 : 4, and as the formula is 1 : 1, ions fill only half of the 8 tetrahedral voids, i.e.

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-043160