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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 current I is flowing through a conductor, the drift velocity is v.
- A long straight wire carries a certain current and produces a magnetic field
- A particle has initial velocity(3i⃗ +4j⃗)and has acceleration (0.4i⃗ +0.3j⃗)
- The interferance pattern is obtained with two coherent light sources of intensity
- Two 220V – 100W bulbs are connected first in series and then in parallel.
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.”