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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: - The ionisation potential of hydrogen-atom is -13.6 eV. An electron in the groundstate
- If the sodium light in Young’s double slit experiment is replaced by red light
- A glass slab consists of thin uniform layers of progressively decreasing refractive
- The magnetic susceptibility is negative for
- A 2 kg mass starts from rest on an inclined smooth surface with inclination
Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The ionisation potential of hydrogen-atom is -13.6 eV. An electron in the groundstate
- If the sodium light in Young’s double slit experiment is replaced by red light
- A glass slab consists of thin uniform layers of progressively decreasing refractive
- The magnetic susceptibility is negative for
- A 2 kg mass starts from rest on an inclined smooth surface with inclination
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.”