Give reason: Ionic radius of is more than atomic radius of F.

The ionic radius of fluoride (F^-) is larger than its atomic radius due to the addition of an extra electron. When fluorine gains an electron to form the fluoride ion, it experiences increased electron-electron repulsion.

Key Factors Influencing Ionic Radius

• Electron Addition: Gaining an electron increases the size of the electron cloud.
• Electron Repulsion: More electrons lead to greater repulsion among them, causing the ion to expand.
• Nuclear Charge: While the positive charge from the nucleus remains the same, the added electron does not increase the nuclear pull on the existing electrons as much as it increases repulsion.

Comparison of Sizes

In summary, the ionic radius of F^- is greater than its atomic radius because the added electron leads to increased repulsion, resulting in a larger overall size for the ion compared to the neutral atom.