Spectrum

IMPORTANT

Spectrum: Overview

This topic covers concepts such as Spectrum, Line Atomic Spectrum, Explanation of Line Spectrum of Hydrogen, Emission Spectrum, Continuous Spectra, Hydrogen Emission Spectrum, Differences between Emission and Absorption Spectrum, etc.

Important Questions on Spectrum

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The spectrum of He is expected to be similar to that

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

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Sodium light gives emission spectrum having two yellow lines.

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The sodium spectrum is dominated by the bright doublet known as _____.

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Sodium light gives emission spectrum having two _____.

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The absorption spectrum and emission spectrum are formed due to the absorption of the energy by electrons.

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The absorption spectrum comprises dark lines or gaps in the spectrum whereas the emission spectrum comprises coloured lines.

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The absorption spectrum comprises _____ in the spectrum whereas the emission spectrum comprises coloured lines.

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The absorption spectrum comprises dark lines or gaps in the spectrum whereas the emission spectrum comprises _____.

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How does light emitted from sodium?

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Differentiate absorption spectrum from emission spectrum.

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

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Define emission spectrum for any element or compound.

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What are some natural sources of continuous spectra?

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What causes continuous spectra?

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Energy levels of A, B, C of a certain atom correspond to the increasing value of energy, i.e. EA<EB<Ec. If  λ1, λ2 and λ3 are the wavelengths of radiations corresponding to the transitions C  to B, B  to A  and C  to A  respectively, which of the following is correct?

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There are many types of electromagnetic radiations, which differ from one another in wavelength (or frequency).

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The study of emission or absorption spectra is referred to as

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When atoms are excited they emit light of certain wavelengths which correspond to different colours. This series of coloured lines is called a _____ spectra.(line/band)

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Give two difference between emission and absorption spectrum.