Outer most configuration of most electronegative element of the periodic table is

Options

A. `3s^2 3p^6`
B. `2s^2 2p^5`
C. `4s^2 4p^3`
D. `2s^2 2p^4`

Explanation

To determine the outermost electron configuration of the most electronegative element in the periodic table, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Most Electronegative Element**:
- The most electronegative element in the periodic table is fluorine (F).

2. **Determine the Atomic Number of Fluorine**:
- Fluorine has an atomic number of 9.

3. **Write the Electron Configuration**:
- The electron configuration of an element is determined by filling the electron orbitals according to the Aufbau principle. For fluorine:
- The first shell (n=1) can hold 2 electrons: 1s²
- The second shell (n=2) can hold up to 8 electrons. For fluorine, it has 7 electrons in this shell: 2s² 2p⁵.

4. **Identify the Outermost Configuration**:
- The outermost shell for fluorine is the second shell (n=2), which contains the 2s and 2p orbitals. Therefore, the outermost electron configuration of fluorine is 2s² 2p⁵.

5. **Conclusion**:
- The outermost configuration of the most electronegative element (fluorine) is 2s² 2p⁵.

### Final Answer:
The outermost configuration of the most electronegative element of the periodic table is **2s² 2p⁵**.

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