Assertion. Zinc blende and wurtzite both have fcc arrangement of sulphide ions. Reason. A unit cell of both has 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 both has four formula units of ZnS
Answer» If both assertion and reason are true, and reason is the true explanation of the assertion. If both assertion and reason are true, but reason is not the true explanation of the assertion. If assertion is true , but reason is false If both assertion and reason are false. SOLUTION :Correct A. 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 zinc blende has 4 FORMULA units while that of wurtzite has 6 formula units of ZnS