Radius Of Nucleus
Easyphysics
The radius of a nucleus with mass number A is given by R = R₀A^(1/3), where R₀ = 1.2 fm. What is the radius of ²⁷₁₃Al nucleus?
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Solution
Incorrect! Answer:
3.6 fm
- Nuclear Radius Formula: R=R0A1/3, where A is the mass number.
- Identify A: For 1327Al, the mass number A=27.
- Substitution:
- R=1.2×(27)1/3 fm.
- Computation:
- R=1.2×3=3.6 fm.
- Note: fm (femtometer) is 10−15 meters.
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About This Question
- Subject
- physics
- Chapter
- atoms and nuclei
- Topic
- radius of nucleus
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
3.6 fm
- Nuclear Radius Formula: R=R0A1/3, where A is the mass number.
- Identify A: For 1327Al, the mass number A=27.
- Substitution:
- R=1.2×(27)1/3 fm.
- Computation:
- R=1.2×3=3.6 fm.
- Note: fm (femtometer) is 10−15 meters.
This easy difficulty physics question is from the chapter atoms and nuclei, covering the topic of radius of nucleus. It appeared in the 2025 exam.
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