NEET Chemistry Atomic Radius MCQ Question
Which of the following combinations about atomic radius is correct?
A cation is smaller than its parent atom; an anion is larger than its parent atom.
Atomic radius can be precisely measured; ionic radius of a cation is larger than that of an anion.
Atomic radius increases down a group; atomic radius decreases across a period.
The covalent radius can be determined by the bond distance in a non-metallic compound; atomic radius is the same for all elements.
Correct Answer
Detailed Explanation
A cation is smaller than its parent atom because it has fewer electrons while its nuclear charge remains the same, and an anion is larger due to increased electron repulsion. This aligns with the NCERT context provided.
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