Which of the following statement given below is incorrect?

Options

A. ONF is isoelectronic with `O_(2)N^(-)`
B. `OF_(2)` is an oxide of fluorine
C. `Cl_(2)O_(7)` is an anhydride of perchloric acid
D. `O_(3)` molecule is bent

Explanation

To determine which statement is incorrect, we need to analyze each option provided. Let's go through them step by step.

### Step 1: Analyze Statement A
**Statement A:** ONF is isoelectronic with O2N⁻.

- **Count the electrons in ONF:**
- Oxygen (O) has 8 electrons.
- Nitrogen (N) has 7 electrons.
- Fluorine (F) has 9 electrons.

Total for ONF = 8 (O) + 7 (N) + 9 (F) = 24 electrons.

- **Count the electrons in O2N⁻:**
- Oxygen (O) has 8 electrons, and there are 2 Oxygens: 2 × 8 = 16 electrons.
- Nitrogen (N) has 7 electrons.
- The negative charge (−1) adds an additional electron.

Total for O2N⁻ = 16 (from O) + 7 (from N) + 1 (from charge) = 24 electrons.

Since both ONF and O2N⁻ have 24 electrons, they are isoelectronic. Therefore, Statement A is **correct**.

### Step 2: Analyze Statement B
**Statement B:** OF2 is an oxide of fluorine.

- **Understanding OF2:**
- Fluorine (F) is more electronegative than oxygen (O).
- Therefore, OF2 should be considered as fluoride of oxygen, not oxide of fluorine.

Since this statement is incorrect, Statement B is the **incorrect statement**.

### Step 3: Analyze Statement C
**Statement C:** Cl2O7 is an anhydride of perchloric acid.

- **Understanding Cl2O7:**
- Perchloric acid (HClO4) can lose water to form Cl2O7.
- Removing water from 2 moles of HClO4 results in Cl2O7.

This statement is **correct**.

### Step 4: Analyze Statement D
**Statement D:** O3 molecule is a species.

- **Understanding O3:**
- Ozone (O3) is indeed a triatomic molecule.
- It has a bent structure with a bond angle of approximately 116.8 degrees.

This statement is also **correct**.

### Conclusion
The only incorrect statement among the options is **Statement B**: OF2 is an oxide of fluorine.

### Final Answer
**The incorrect statement is Statement B: OF2 is an oxide of fluorine.**

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