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Chemistry · Structure of atom

हिन्दी

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The volume occupied by the nucleus is negligibly small as compared to the total volume of the atom. Reason (R): The radius of an atom is about \( 10^{-10} \text{ m} \), whereas the radius of a nucleus is about \( 10^{-15} \text{ m} \). In the light of the above statements, choose the correct answer from the options given below:

  1. Both (A) and (R) are true and (R) is the correct explanation of (A).
  2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A).
  3. (A) is true but (R) is false.
  4. (A) is false but (R) is true.

Correct answer · Option 1

Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation

Since atomic radius is \( 10^{-10} \text{ m} \) and nuclear radius is \( 10^{-15} \text{ m} \), volume ratio is extremely small, and R correctly explains A.
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