| ⇦ | 
| ⇨ |
The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be. The number of nucleons in Ge are
Options
(a) 72
(b) 73
(c) 74
(d) 75
Correct Answer:
72
Explanation:
Nuclear radii R = R₀(A)¹/³, where R₀ = 1.2 Fm
(or), R ∝ (A)¹/³
Rʙₑ / Rɢₑ = (9)¹/³ / (A)¹/³ (or), Rʙₑ / 2Rʙₑ = (9)¹/³ / (A)¹/³ (Given: Rɢₑ = 2Rʙₑ)
(A)¹/³ = 2 × (9)¹/³ ⇒ A = 2³ × 9 = 8 × 9 = 72
Related Questions: - Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- There are four light-weight-rod samples A,B,C,D seperately suspended by threads
- A particle moves in xy plane according to the equation x = 4t² + 5t + 16 and y = 5t
- Kepler’s third law states that square of period of revolution (T) of a planet
- Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- There are four light-weight-rod samples A,B,C,D seperately suspended by threads
- A particle moves in xy plane according to the equation x = 4t² + 5t + 16 and y = 5t
- Kepler’s third law states that square of period of revolution (T) of a planet
- Consider two concentric spherical metal shells of radii r₁ and r₂( r₂>r₁). If the outer
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
Nuclear Radius, R=Ro(A)1/3, where Ro ~ 1.2fm (fermi unit=10-15)
Or R=(A)1/3.
RBe /RGe = (9)1/3/(A)1/3
RBe /2 RBe = (9)1/3/(A)1/3 …-(Given: RBe: RGe = 1:2)
Or (A)1/3 = 2*(9)1/3
Hence, A=23 * 9
=8*9
=72.
Hence, the number of nucleons is 72.