Question
The correct statements among the following are. A. Basic vanadium oxide is used in the manufacture of H _2 SO _4. B. The spin-only magnetic moment value of the transition metal halide employed in Ziegler-Natta polymerization is 2.84 BM. C. The p-block metal compound employed in Ziegler-Natta polymerization has the metal in +3 oxidation state. D. The number of electrons present in the outer most 'd' orbital of metal halide employed in Wacker process is 8. Choose the correct answer from the options given below:
Step-by-step solution
Statement A: Vanadium pentoxide ( V _2 O _5) is used as a catalyst in the manufacture of H _2 SO _4 by the Contact process. V _2 O _5 is an amphoteric oxide, not a basic oxide. Thus, statement A is incorrect. Statement B: The transition metal halide used in Ziegler-Natta polymerization is TiCl _4. In TiCl _4, titanium is in the +4 oxidation state with a 3 d ^0 electronic configuration. The number of unpaired electrons is zero, so its spin-only magnetic moment is 0 BM. Thus, statement B is incorrect. Statement C: The p-block metal compound used in Ziegler-Natta polymerization is triethylaluminium, Al ( C _2 H _5)_3. Aluminium is a p-block element and is in the +3 oxidation state. Thus, statement C is correct. Statement D: The metal halide employed in the Wacker process is PdCl _2. Palladium (Pd) has the electronic configuration [ Kr ] 4 d ^ 10 . In PdCl _2, Pd is in the +2 oxidation state, giving it a 4 d ^8 configuration. The number of electrons in the outermost d-orbital is 8. Thus, statement D is correct. Therefore, only statements C and D are correct.