Consider the following rules of naming coordination compounds.
I. The cation is named first in both positively and negatively charged coordination entities.
II. The ligands are named in an alphabetical order after the name of the central atom/ion.
The incorrect statement (s) is /are

Options

A. Only I
B. Only II
C. I and II
D. Neither I nor II

Answer

To determine the incorrect statement(s) regarding the naming of coordination compounds, we will analyze the two provided statements step by step.

### Step 1: Analyze Statement I
**Statement I:** "The cation is named first in both positively and negatively charged coordination entities."

- In coordination chemistry, it is a standard rule that the cation (positively charged ion) is always named first, regardless of whether the overall coordination compound is positively or negatively charged.
- For example, in the complex ion K₄[Fe(CN)₆], potassium (K⁺) is the cation and is named first.

**Conclusion for Step 1:** This statement is **correct**.

### Step 2: Analyze Statement II
**Statement II:** "The ligands are named in an alphabetical order after the name of the central atom/ion."

- According to the rules of naming coordination compounds, ligands are indeed named in alphabetical order. However, they are named **before** the name of the central atom/ion, not after.
- For example, in the same complex K₄[Fe(CN)₆], the ligands (cyanide ions) are named as "hexa-cyano" and come before the central atom "iron" in the name of the compound.

**Conclusion for Step 2:** This statement is **incorrect**.

### Final Conclusion
- The first statement is correct.
- The second statement is incorrect.

Thus, the answer to the question is that the incorrect statement is **Statement II**.

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