JEE Main 2017 — Structure Of Atom Question with Solution
From: JEE Main 2017 (Offline)
Question
The radius of the second Bohr orbit for hydrogen atom is:
(Planck’s Const. h = 6.6262 × 10-34 Js; mass of electron = 9.1091 × 10-31 kg; charge of electron (e) = 1.60210 × 10-19 C; permittivity of vacuum () = 8.854185 × 10-12 kg-1 m-3 A2)
(Planck’s Const. h = 6.6262 × 10-34 Js; mass of electron = 9.1091 × 10-31 kg; charge of electron (e) = 1.60210 × 10-19 C; permittivity of vacuum () = 8.854185 × 10-12 kg-1 m-3 A2)
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Show full solutionCorrect option: B
Correct answer
B2.12
Step-by-step explanation
Radius of an atom in nth orbit,
rn = 0.529
Here n = 2
and for hydrogen atom, atomic number (Z) = 1
r2 = 0.529 = 2.12
rn = 0.529
Here n = 2
and for hydrogen atom, atomic number (Z) = 1
r2 = 0.529 = 2.12
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This is a previous-year question from JEE Main 2017, covering the Structure Of Atom chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.