In which of the following atoms is the ionic radius larger than the atomic radius? [₁₁ Na, ₁₂Mg,₁₃AI,₁₇CI]

Temmie.T

1 month ago

Answer: B. Chlorine because Ionic radius is larger than atomic radius when an atom gains electron(s) to form a negative ion.
Na, Mg, and Al lose electrons, so their ionic radii are smaller than their atomic radii.
Chlorine gains one electron to form Cl⁻, so its ionic radius is larger than its atomic radius.