1. In a transition metal complex having Oh symmetry, which configurations in the followings can be classified as E? (A) t2g³ (B) t2g⁴eg² (C) t2g³ (D) t2g³eg³ (E) t2g⁶eg²

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.

1. In a transition metal complex having Oh symmetry, which configurations in the followings can be classified as E?
(A) t_2g³
(B) t_2g⁴_eg²
(C) t_2g³
(D) t_2g³_eg³
(E) t_2g⁶_eg²

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