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Given below are two statements : Statement I : The metallic radius of Na is 1.86 Å and the ionic radius of Na+ is less than 1.86 Å. Statement II : Ions are always smaller in size than the corresponding elements. In the light of the above statements, choose the correct answer from the options given below : (1) Statement I is correct but Statement II is false (2) Both Statement I and Statement II are true (3) Both Statement I and Statement II are false (4) Statement I is incorrect but Statement II is true

1. Statement I is correct but Statement II is false
2. Both Statement I and Statement II are true
3. Both Statement I and Statement II are false
4. Statement I is incorrect but Statement II is true

Correct answer: Statement I is correct but Statement II is false

Solution

Statement I is accurate because the ionic radius of Na+ is indeed smaller than its metallic radius due to the loss of an electron, which reduces electron-electron repulsion. However, Statement II is false because while many ions are smaller than their neutral atoms, this is not universally true for all elements, particularly for anions.

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