Which is not correct?

Options

A. GeO is acidic
B. `GeCl_(2)` is more stable than `GeCl_(4)`
C. `GeO_(2)` is acidic.
D. `GeCl_(4)` in HCl forms `[GeCl_(6)]^(2-)` ion.

Answer

To determine which statement is not correct from the given options, we will analyze each one step by step.

### Step 1: Analyze the first statement - "GeO is acidic."
- **Explanation**: GeO (Germanium monoxide) is known to be amphoteric in nature, meaning it can react with both acids and bases. However, it is not strictly classified as acidic. Therefore, this statement is somewhat misleading.
- **Conclusion**: This statement is not definitively incorrect, but it is not fully accurate either.

### Step 2: Analyze the second statement - "GCl2 is more stable than GCl4."
- **Explanation**: In GCl2, germanium (Ge) has an oxidation state of +2, while in GCl4, it has an oxidation state of +4. According to the inert pair effect, the stability of +2 oxidation state increases down the group. However, germanium is in the middle of the group, and it is known that Ge+4 is more stable than Ge+2. Thus, GCl4 is actually more stable than GCl2.
- **Conclusion**: This statement is incorrect.

### Step 3: Analyze the third statement - "GeO2 is acidic."
- **Explanation**: In GeO2, germanium is in the +4 oxidation state. GeO2 can accept electrons and thus behaves as an acid. Therefore, this statement is correct.
- **Conclusion**: This statement is correct.

### Step 4: Analyze the fourth statement - "GCl4 in HCl forms GeCl6 2- ions."
- **Explanation**: When GCl4 reacts with HCl, it indeed forms a complex ion, GeCl6 2-. The reaction can be represented as GeCl4 + 2 HCl → GeCl6 2- + H2. Therefore, this statement is also correct.
- **Conclusion**: This statement is correct.

### Final Conclusion:
The statement that is not correct is the second one: "GCl2 is more stable than GCl4."

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