ionic radius vs atomic radius

Question

Which statement is correct regarding ionic vs atomic radius?

RankGuru · Accepted Answer

1. **Cation Formation**: Losing an electron increases the effective nuclear charge felt by remaining electrons and sometimes removes a whole valence shell. Result: **Cation < Neutral Atom**.
2. **Anion Formation**: Adding an electron increases electron-electron repulsion, forcing the electron cloud to expand. Effective nuclear charge per electron decreases. Result: **Anion > Neutral Atom**.
3. **Combined Order**: For a given element (e.g., Iodine), the size comparison is: **Anion ($I^-$) > Neutral ($I$) > Cation ($I^+$)**.

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ionic radius vs atomic radius

Select the correct option: