Question

What is the EAN of \( [\text{Al}(\text{C}_4\text{O}_4)_3]^{3-} \)?

• A. 28
• B. 22
• C. 16
• D. 10

Hint:

The Effective Atomic Number (EAN) is a useful concept in coordination chemistry to determine the stability of a complex.

Answer 1

The Correct Option is B

Step 1: Understanding Effective Atomic Number (EAN).
The EAN is calculated by adding the number of electrons from the metal ion and the ligands. For this complex, the number of electrons is 22.

Step 2: Conclusion.
The EAN of the complex is 22, corresponding to option (2).