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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A car of mass m starts from rest and accelerates so that the instantaneous
- A straight conductor of length 0.4 m is moved with a speed of 7 ms⁻¹perpendicular
- In the Young’s modulus experiment, if length of wire and radius both are doubled,
- Characteristic X-rays are produced due to
- The distance of the moon form the earth is 3.8×10⁵ km. Supposing that the eye
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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.”