In order from lowest to highest frequency, the main bands are. How can this technique be used to determine the elemental composition of stars? The reason why each atom has a unique emission spectra is because the atom has more or less attractive forces. The spacing between the lines in the spectrum of an element are constant. ... the wavelength of which refers to the discrete lines of the emission spectrum. Why does each element has a unique spectrum of absorption or emission lines. Each element has a unique set of possible energy levels in which an electron can reside. Emission spectrum: The emission spectrum of a chemical compound or chemical element is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state. Emission spectra are unique for each element (or different elements have different emission spectra). Here is a great sample from one of my students. This is called the emission spectrum of an element. I know that each element does have a unique spectrum and that the spectrum can be used to classify an unknown element, but i cannot figure out WHY each element has this. Every element has a unique atomic emission spectrum, as shown by the examples of mercury (Hg) and strontium (Sr). For example, compare spectra of hydrogen: helium: and carbon: But why? element emission spectra reflection.jpg. Note however that the emission extends over a range of frequencies, an effect called spectral line broadening. For example, Helium and Lithium + both have the same amount of electrons, but Helium has two protons, whereas Lithium has three, hence making the wavelength and spectrum different. Basically. C. Why does each element have its own unique emission spectrum? Was there any underlying reason for each element to generate a unique spectrum? Does a 40 W incandescent light bulb produce both a continuous and a line spectrum? please help! Why do elements produce different numbers of spectral lines? 5. What two competing fundamental forces are at work inside the nucleus of an atom? I think it does, but I'm not sure. 4. An emission spectrum is the electromagnetic radiation (EMR), such as visible light, a substance emits. (2 points) Each element has a different number of protons therefore the energy needed is different for each element. Each of these spectral lines corresponds to a different electron transition from a higher energy state to a lower energy state. Explain why each element has a unique spectrum of absorption or emission lines. Question 4: Nuclear Structure (5 points) A. Every element gives off a unique fingerprint of light, so analyzing the frequencies of this light helps identify the chemical that generated it. Johannes Balmer studied the optical spectrum of hydrogen and found a pattern in the wavelengths of its emission … why does each element have a unique line emmision spectrum? 3. 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