Chemistry-Atomic Radius

NEET Chemistry Atomic Radius MCQ Question

Type: MCQ-conceptual-Hard-Class 11

Which of the following combinations correctly describe the atomic radius and its behavior in terms of ionic radius?

A

Cations are larger than their parent atoms, while anions are smaller than their parent atoms.

B

The atomic radius generally decreases across a period due to increased nuclear charge, and cations are smaller than their neutral atoms.

C

Anions have a smaller radius than their corresponding neutral atoms due to increased electron repulsion.

D

Atomic radius increases down a group as additional electron shells are added, and anions are larger than their parent atoms due to electron repulsion.

Correct Answer

Option D

Detailed Explanation

Cations are smaller than their parent atoms due to fewer electrons while anions are larger due to increased electron repulsion. The atomic radius indeed increases down a group as additional electron shells are added.

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