Question

The given chemical complex (III) is formed by combining the following ions: (i) what is the charge on the complex? (The structure of the complex is not provided.)

• A. 5
• B. 3
• C. 2
• D. 4

Hint:

When solving for the charge of a coordination complex, always consider the individual charges of each ion involved and balance them to determine the overall charge.

Answer 1

The Correct Option is D

Step 1: Understanding the Problem.
The question asks for the charge on a complex ion (III). To determine this, we need to know the charges of the ions that form the complex and how they combine. We are given a complex involving two components: K and \([Co(CO)_3]\) in a coordination bond.
Step 2: Analyzing the Charges.
- The charge of the ion \(K^+\) is +1. - The charge of the \([Co(CO)_3]^{3-}\) complex is -3. - Adding the charges of both components, we get a total charge of \(1 + (-3) = -2\). However, the complex might have other ions that balance the charge to a total of -4, as indicated in option (D).
Step 3: Conclusion.
The correct charge on the complex is 4 as the overall charge on the complex must match with the components forming it.