33. Match list I (compounds) with list II (structures), and select the correct answer using the codes given below.(A) (a-iii) (b-i) (c-ii) (B) (a-ii) (b-iii) (c-i) (C) (a-ii) (b-i) (c-iii) (D) (a-i) (b-ii) (c-iii) (E) (a-i) (b-iii) (c-ii)

4. Both ZnS and CaF₂ have a face-centered cubic unit cell where the S²⁻ and Ca²⁺ ions are closest packed in each structure. Which of the following is true? (A) There are 4 tetrahedral holes empty in each structure. (B) In both compounds, one-half of the tetrahedral holes are filled. (C) In both compounds, all the tetrahedral holes are filled. (D) There are 8 Zn²⁺ ions and 4 F⁻ ions in the unit cell. (E) In ZnS, one-half of the tetrahedral holes are filled by Zn²⁺ ions, whereas in CaF₂ all the tetrahedral holes are filled with F⁻ ions.

33. Match list I (compounds) with list II (structures), and select the correct answer using the codes given below.

(A) (a-iii) (b-i) (c-ii)
(B) (a-ii) (b-iii) (c-i)
(C) (a-ii) (b-i) (c-iii)
(D) (a-i) (b-ii) (c-iii)
(E) (a-i) (b-iii) (c-ii)

相關試題

相關試卷