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Question: Answered & Verified by Expert
A hydrogen atom in ground state absorbs 10.2 eV of energy. The orbital angular momentum of the electron is increased by
PhysicsAtomic PhysicsNEET
Options:
  • A 1.05×1034Js
  • B 2.11×1034Js
  • C 3.16×1034Js
  • D 4.22×1034Js
Solution:
1607 Upvotes Verified Answer
The correct answer is: 1.05×1034Js
ΔE=E2-E1

10.2eV=-3.4eV+13.6eV

This is possible only when

E2-3.4 eV and

E1=-13.6eV

This mean n2=2 & n1=1

ΔL=2h2π-h2π=h2π=6.63×10-342×3.14J s

=1.05×1034Js

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