Bohr Model of Hydrogen Spectra

Why are line emission spectra of elements called "atomic fingerprints"?

• They are all the same

• They are all unique

• They are all similar

• They all contain colored light

• They contain the same energy

Tags

NGSS.HS-PS4-3

n=1 to n=2 energy level gap is shown by which line in which series of the Hydrogen spectrum?

• Lyman series lowest frequency line

• Balmer series lowest frequency line

• Lyman series highest frequency line

• Balmer series highest frequency line

• Paschen series highest frequency line

The figure shows a simplified diagram of visible line emission spectrum of Hydrogen.

What quantities can be represented along the horizontal axis of the figure above?

Tags

NGSS.HS-PS4-1

Wavelength of the first line of the Balmer series is longer than the wavelength of the first line of the Lyman series.

• True

• False

Tags

NGSS.HS-PS4-1

When Lyman and Balmer series considered, Lyman series belongs to a region with higher wave lengths.

• True

• False

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

In the Hydrogen spectrum, the distance between nearby lines of any series _________________ towards the direction of increasing frequency.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which of the following statements is/are incorrect regarding the atomic emission spectrum of Hydrogen?

• The radiation corresponding to the n=2 to n=1 transition has the longest wavelength in the Lyman series

• The series of lines of Lyman series occurs in the ultraviolet region

• Each line in the spectrum corresponds to an indefinite radiation.

• Emission of radiation occurs when electrons undergo transitions from lower levels to higher energy levels.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-4

The true statements out of the following is/are:

• Sunlight has a continuous spectrum

• The highest frequency of the uv range is existing for the violet colour

• The Lyman series formed in the Hydrogen spectrum belongs to the Infra-red region

• The waves that form when the electrons are transmitted from the higher energy levels to the third energy level are belonging to the Brackett series.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

NGSS.HS-PS4-4

A radiation having a frequency of 662 nm causes the red line of Balmer series of the atomic spectrum of Hydrogen.

Select the suitable energy levels of transition to form the above relevant line on the spectrum.

• n=2 to n-5

• n=2 to n=3

• n=3 to n=2

• n=3 to n=4

• n=5 to n=2

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

The energy levels that are related with the electron transition which liberates the highest energy of the H atom is,

• n=4 to n=2

• n=4 to n=3

• n=7 to n=5

• n=6 to n=2

• n=2 to n=1