Assertion. Zinc blende and wurtzite both have fcc arrangement of sulphide ions. Reason.A unit cell of bothhas four formula units of ZnS.

Assertion. Zinc blende and wurtzite both have fcc arrangement of sulph

1.	Assertion. Zinc blende and wurtzite both have fcc arrangement of sulphide ions. Reason.A unit cell of bothhas four formula units of ZnS.
Answer» Solution :CorrectR. Zinc blende has fcc arrangement of `S^(2-)`ions while wurtzite has HEXAGONAL, close packing arrangement of `S^(2-)`ions. CORRECT R. A UNIT cell of zine blende has 4 formula unit while that of wurzite has 6 formula units of ZnS.