A) Identify the counter ion. Fe (Iron) (4K+)

Let's check your work for Q8 a).

Your answer for Q8 a) "Fe (Iron) (4K+)" is ❌ Incorrect.

• "Fe (Iron)" is the central metal ion, not the counter ion.
• While "4K$^+$" correctly identifies the potassium ions as balancing the charge, the question asks for the counter ion (singular), which is the potassium ion itself.

The correct answer for Q8 a) is:
Q8. Study the coordination compound below.
The compound is $\text{K}_4[\text{Fe}(\text{CN})_6]$.

a) Identify the counter ion.
The counter ion is the ion outside the square brackets that balances the charge of the complex ion. In $\text{K}_4[\text{Fe}(\text{CN})_6]$, the complex ion is $[\text{Fe}(\text{CN})_6]^{4-}$, and the potassium ions balance this charge.

• Counter ion: $\text{K}^+$