If the number of radius of ²⁷Al is 3.6 Fermi, the approximate nuclear radius

⇦

⇨

If the number of radius of ²⁷Al is 3.6 Fermi, the approximate nuclear radius of ⁶⁴Cu in Fermi is:

Options

(a) 2.4
(b) 1.2
(c) 4.8
(d) 3.6

Correct Answer:

4.8

Explanation:

The radius of the nuclears is directly proportional to cube root of atomic number i.e., R ∞ A¹/³
R = R₀A¹/³, where R₀ is a constant of proportionality
R₂ / R₁ = (A₂ / A₁)¹/³ (64 / 27)¹/³ = 4/3
where R₁ = radius of ²⁷Al, and A₁ = Atomic mass number of Al
R₂ = the radius of ⁶⁴Cu and A₂ = Atomic mass number of C4.
R₂ = 3.6 x 4/3 = 4.8 m.

Related Questions:

1. A block of mass 0.50 kg is moving with a speed of 2.00 ms⁻¹ on a smooth surface.
2. The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
3. Light is emitted when
4. The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5Å
5. The identical cells connected in series are needed to heat a wire of length one meter

Topics: Atoms and Nuclei (136)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends