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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.
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A bottle full of water in a space ship at 30⁰C is carried on the moon.
- A particle of unit mass undergoes one-dimensional motion such that its velocity varies
- Three capacitors each of capacitance C and of breakdown voltage V are joined in series
- A choke is preferred to a resistance for limiting current in AC circuit because
- A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV.
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.”