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