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  4. Hydrogen Spectrum MCQ - Practice Questions with Answers

Hydrogen Spectrum MCQ - Practice Questions with Answers

Updated on Sep 25, 2023 25:23 PM

Quick Facts

  • Line spectrum of hydrogen is considered one the most difficult concept.

  • 16 Questions around this concept.

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Paschen series and Bracket series lies in region

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The wavelength (in nm) of the radiation emitted, when in a hydrogen atom electron falls from infinity to stationary state 1, would be 

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Concepts Covered - 1

Line spectrum of hydrogen

Line Spectrum of Hydrogen-like atoms

\frac{1}{\lambda }= RZ^{2}\left ( \frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}} \right )

Where R is called Rhydberg constant, R = 1.097 X 107,  Z is atomic number

n1= 1, 2, 3….

n2= n1+1, n1+2 ……

Lyman Series spectrum:

Where

n1= 1 and  n2= 2, 3, 4....

This lies in Ultraviolet region.

Balmer Series Spectrum:

Where n1= 2 and  n2= 3, 4, 5, 6....

It lies in visible region.

Paschen, Bracket and Pfund Series spectrums:

these lies in Infrared Region.

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Line spectrum of hydrogen

Study other Related Concepts

Hydrogen Spectrum Current Topic

Thomson atomic model
Rutherford atomic model and its limitations
Atomic Number(Z), Mass number(A), Isotopes and Isobars
Electromagnetic radiation
Planck's quantum theory
Photoelectric effect
Hydrogen Spectrum
Bohr's Model Of An Atom
Zeeman and Stark's effect.
De Broglie Relationship

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Books

Reference Books

Line spectrum of hydrogen

Chemistry Part II Textbook for Class XI

Page No. : 44

Line : 50

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