Question

Consider the statements
(A) In Zeigler-Natta catalyst, d-block central metal ion has spin magnetic moment of 2.84 BM.
(B) In Zeigler-Natta catalyst, p-block element has +3 oxidation state.
(C) Basic vanadium oxide is used in the production of \( \text{H}_2\text{SO}_4 \).
(D) Catalyst used in Wacker's process has central metal with \(d^8\) configuration.

• A. (A), (B) & (C) are correct
• B. (B) & (D) are correct
• C. (C) & (D) are correct
• D. (B), (C) & (D) are correct

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question tests knowledge about various industrial catalysts and the electronic properties of the metals involved.
Step 2: Detailed Explanation:
- Zeigler-Natta Catalyst: It is a mixture of \(TiCl_4\) or \(TiCl_3\) with \(Al(C_2H_5)_3\).
(A) In the active form, Ti is often in the +3 state (\(3d^1\)). Magnetic moment \(\mu = \sqrt{1(1+2)} = 1.73\) BM. The value 2.84 BM corresponds to \(d^2\). This statement is generally considered incorrect for the standard catalyst description.
(B) The p-block element is Aluminum in \(Al(C_2H_5)_3\), where it exists in the +3 oxidation state. This statement is correct.
- Contact Process:
(C) \(V_2O_5\) is used in the production of \(H_2SO_4\). \(V_2O_5\) is an amphoteric oxide, not basic. This statement is incorrect.
- Wacker's Process:
(D) The catalyst is \(PdCl_2\) in the presence of \(CuCl_2\). The central metal Palladium is in the +2 oxidation state (\(Pd^{2+}\)). Since Pd is in the same group as Ni (\(d^8s^2\)), \(Pd^{2+}\) has a \(4d^8\) configuration. This statement is correct.
Step 3: Final Answer:
Statements (B) and (D) are the only correct ones.