# FAQ: What Is The Wavelength Of The Least Energetic Spectral Line In The Infrared Series Of The H Atom?

Since wavelength is inversely proportional to energy, the least energetic among these is the 656.2nm, red spectral line.

## What is the wavelength of least energetic?

Thus the wavelength of light for the least energetic photon emitted photon in the Lyman series of the hydrogen spectrum is equal to 122nm.

## What is the wavelength of the spectral line?

A typical spectral line in the visible region of the spectrum has a wavelength of 5.8 × 105 cm; this wavelength corresponds to a frequency (ν) of 5.17 × 1014 Hz (hertz equals one cycle per second) obtained from the equation.

## Which molecule has least energetic?

Solids have the least energetic molecules. Solids have high melting and boiling point as compared to liquids and gases. Solids have least inter particle space.

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725nm.

## How do you find the wavelength of a spectral line?

As we know that the hydrogen spectrum is an emission spectrum, the atoms get excited and transition to different energy levels. Niels Bohr can study these transitions. Again he gave a formula known as the Rydberg formula to calculate the wavelength of these spectral lines. 1/λ = RZ2(1/n12− 1/n2h).

## What is the wavelength of the spectral line corresponding to the highest energy transition in the visible region of hydrogen spectrum?

The light emitted by hydrogen atoms is red because, of its four characteristic lines, the most intense line in its spectrum is in the red portion of the visible spectrum, at 656 nm.

## Which of the following series of spectral lines can be found in the infrared region of the spectrum?

The Lyman series lies in the ultraviolet, whereas the Paschen, Brackett, and Pfund series lie in the infrared.

## What is the least energetic state?

Solid particles have the least amount of energy, and gas particles have the greatest amount of energy.

## Which of the following States has the least energetic molecules *?

Solid state: In this state, the molecules are arranged in regular and repeating pattern. The molecules are closely packed that means they are fixed and vibrate in place but they can not move from one place to another, thus have least kinetic energy.

## Which molecule is most energetic?

Gas molecules have the most kinetic energy because they have random motion and travel at very high speeds. As a result, gases have the highest kinetic energy, liquids have a lower kinetic energy, and solids have the lowest kinetic energy. Hence option C is correct.

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## What is the shortest wavelength of Balmer series in hydrogen spectrum?

Since 1˜ν=λ in units of cm, this converts to 364 nm as the shortest wavelength possible for the Balmer series.

## What is the ratio of the shortest wavelength of Balmer series to the shortest wavelength of Lyman series?

Show that the shortest wavelength lines in Lyman,Balmer and Paschen series have their wavelength in the ratio 1:4:9. Hence, λLs:λBs:λPs=1:4:9.

## What is the wavelength of the series limit for the Lyman series?

The Lyman limit is the short-wavelength end of the hydrogen Lyman series, at 91.2 nm (912 Å).