Q32.If the shortest wavelength in Lyman series of hydrogen atom is A, then the longest wavelength in Paschen series of He+ is (1) 5A (2) 36A 9 7 (3) 36A (4) 9A 5 5
What This Question Tests
This question requires applying the Rydberg formula to calculate wavelengths for different spectral series and different hydrogen-like species (H and He+).
Concepts Tested
Formulas Used
1/λ = RZ² (1/n₁² - 1/n₂²)
📚 NCERT Sections This Tests
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
12.8 — A 12.5 Ev Electron Beam Is Used To Bombard Gaseous Hydrogen At
Physics Class 12 · Chapter 12
12.8 A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. What series of wavelengths will be emitted?
12.7 — The Radius Of The Innermost Electron Orbit Of A Hydrogen Atom Is
Physics Class 12 · Chapter 12
12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3×10–11 m. What are the radii of the n = 2 and n =3 orbits?
📋 Question Details
- Chapter
- Atomic Structure
- Topic
- Bohr's model, Hydrogen spectrum, Rydberg formula
- Year
- 2017
- Shift
- 08 Apr Online
- Q Number
- Q32
- Type
- MCQ
- NCERT Ref
- Class 11 Chemistry Ch 2: Structure of Atom
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