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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
- When the wavelength of sound changes from 1 m to 1.01 m,
- The equations of motion of a projectile are given by x=36 t metre and 2y=96t-9.8t²
- The primary of a transformer when connected to a dc battery of 10 volt draws a current
- Charge density for intrinsic semiconductor will be
- Light with an energy flux of 25×10⁴ Wm⁻² falls on a perfectly reflecting surface
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.”