JEE Main 1985 Chemistry question on Atomic Structure
The radius of an atomic nucleus is of the order of
A.
10−10 cm
B.
10−13 cm
C.
10−15 cm
D.
10−8 cm
Show answer and solution
Correct option: B
Solution
The radius of an atomic nucleus is approximately 10⁻¹³ cm (equivalently, 10⁻¹⁵ m or 1 Fermi). This is about 100,000 times smaller than the atomic radius (~10⁻⁸ cm), which is the size of the electron cloud. Option 10⁻¹⁰ cm corresponds to atomic radius in meters, not the nucleus, so 10⁻¹³ cm is the correct nuclear scale.
[1985]
Practise Atomic Structure the way it is asked
A timed set of real JEE Main Atomic Structure questions, graded as the exam grades. No sign-up.
