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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: - Which of the following phenomena support the wave theory of light?
- An object is placed 30 cm away from a convex lens of focal length 10 cm and a sharp
- The valence band and the conductance band of a solid overlap at low temperature
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Topics: Atoms and Nuclei
(136)
Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following phenomena support the wave theory of light?
- An object is placed 30 cm away from a convex lens of focal length 10 cm and a sharp
- The valence band and the conductance band of a solid overlap at low temperature
- Copper has face centered cubic (fcc) lattice with interatomic spacing equal to 2.54Å.
- A person holding a rifle (mass of person and rifle together is 100 kg) stands on a smooth
Topics: Atoms and Nuclei (136)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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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.