The Lyman series corresponds to the emission lines of hydrogen atom due to the transitions of the type n → 1 ( 2 → 1 , 3 → 1 , 4 → 1 , etc ) where n is the principal quantum number of the excited state. The ionization energy of the hydrogen atom can be determined by plotting:

Frequency differences between successive emission lines vs emission frequencies

Frequency differences between successive emission lines vs n

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The sodium spectrum is dominated by the bright doublet known as Sodium D-lines.

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Important Questions on Structure of Atom

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

Two series of spectral lines of atomic hydrogen which do not belong to infrared spectral region are

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

Which of the following is correct?

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

Electrons of mass,

m

with de-Broglie wavelength,

λ

fall on the target in an X-ray tube. The cutoff wavelength,

(λ_{0})

of the emitted X-ray is

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

Which of the following statements is false?

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The spectrum of Helium is expected to be similar to that of____

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The Lyman series corresponds to the emission lines of hydrogen atom due to the transitions of the type

n \to 1 (2 \to 1, 3 \to 1, 4 \to 1

, etc ) where

n

is the principal quantum number of the excited state. The ionization energy of the hydrogen atom can be determined by plotting:

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The number of following statement/s which is/are incorrect is ______

A) Line emission spectra are used to study the electronic structure

B) The emission spectra of atoms in the gas phase show a continuous spread of wavelength from red to violet.

C) An absorption spectrum is like the photographic negative of an emission spectrum

D) The element helium was discovered in the sun by spectroscopic method

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

78) There are two statements, one labelled as Assertion (A) and the other as Reason (R). Examine both the statements carefully and mark the correct choice.
(A) Hydrogen has one electron in its orbit but it produces several spectral lines.
(R) There are many excited energy levels available.

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The product obtained after positron emission from

{}_{31}{Ga}^{68}

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

Which one of the following has the highest wavelength?

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The ratio of the highest to the lowest wavelength of Lyman series is

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The correct representation of wavelength intensity relationship of an ideal black body radiation at two different temperatures

T_{1}

and

T_{2}

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

Name the four colours of the spectrum of white light which have wavelength more than that of blue light.

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The continuum in an atomic spectrum is due to

HARD

Chemistry>Physical Chemistry>Structure of Atom>Spectrum

H e^{\oplus}

ion sample

e^{-}

is in ground state, if photon of energy

52.24 e V

is given to the sample all the atom goes to higher energy state. It again falls back up to ground state. If it is not emitting any lines in Balmer series then what is the maximum possible number of spectral lines observed

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

What are ultraviolet radiations? How are they detected? State one use of these radiations.

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Chemistry>Physical Chemistry>Structure of Atom>Spectrum

The line spectrum of