Atomic Spectra

Distinguish between continuous spectrum and dis- continuous spectrum. Give some examples of sources for these spectra. 

An electron in the excited state of an atom is highly unstable.

Characteristic spectra of atoms are line spectra.

What is a fine spectrum? 

What is a continuous spectrum? 

The wavelength of first line of Paschen series is $\mathrm{\lambda }=720 \mathrm{nm}$. The wavelength of $2\mathrm{nd}$ line of this series is ____.

The wavelength of ${\mathrm{H}}_{\mathrm{\alpha }}$ line Balmer’s series of hydrogen spectrum is $6563{\mathrm{A}}^{\circ }$ . Find the:

Shortest wavelength of Brackett series?

Number of possible spectral lines in the bracket series in hydrogen spectrum when electrons is present in the 9th excited state return to the ground state.

What are the frequency and wavelength when electron jumps from $\mathrm{n}=5$ state to $\mathrm{n}=2$ state ?

Define an emission spectrum.

State the principle of UV-visible spectroscopy.

State the uses of ultraviolet electromagnetic waves.

State the principle of UV visible spectroscopy.

Can we find the Ionisation Energy of Hydrogen in the Emission Spectrum?

Define emission spectrum for any element or compound.

What are some natural sources of continuous spectra?

What causes continuous spectra?

Write the relationship between bracket series with Rydberg's constant and wavelength of different lines of the spectrum of the hydrogen?

The first five series of lines that correspond to ${\mathrm{n}}_1=1,2,3,4,5$ are known as Lyman, Balmer, Paschen, _____ and Pfund series, respectively.

Which of the following is the value of the Rydberg constant for hydrogen?