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In which of the following systems will the radius of the first orbit (n=1) be minimum?
Options
(a) Single ionised helium
(b) Deutron atom
(c) Hydrogen atom
(d) Doubly ionised lithium
Correct Answer:
Doubly ionised lithium
Explanation:
r ∝ 1 / Z. For doubly ionised lithium, Z = 3
.·. r will be minimum.
Related Questions: - A thin ring of radius R meter has charge q coulomb uniformly spread on it
- A man measures time period of a pendulum(T) in stationary lift. If the lift moves upwards
- A uniform plank of Young’s modulus Y is moved over a smooth horizontal surface
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A thin ring of radius R meter has charge q coulomb uniformly spread on it
- A man measures time period of a pendulum(T) in stationary lift. If the lift moves upwards
- A uniform plank of Young’s modulus Y is moved over a smooth horizontal surface
- Wb/m² is equal to
- Which is incorrect about thermal process
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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“r ∝ 1 / Z. For doubly ionised lithium, Z = 3
.·. r will be minimum.”