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What group of elements can be detected by flame emission spectrometry?
Wiki User
∙ 9y ago
alkali earth , alkali,transational and other elements including C,S,As etc
Wiki User
∙ 9y ago
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Why did each compound produce a flame of a different color?
Different elements have different emission spectra, meaning that if the electrons in an atom are excited, they will release that energy in different color of light. The flame color depends on the elements in the compound.
What information does a flame test provide?
The emission spectrum of an element
Do only s-block elements give flame test?
No, many elements outside the s-block will also give a flame test.Here are a few examples.Some d-block elements include:Copper (blue-green flame)Manganese (yellowish green flame)Zinc (blue-green flame)Some p-block elements include:Lead (blue flame)Thallium (green flame)Selenium (azure flame)
Can you use flame test to identify element?
Yes. Every element has a very particular emission spectrum. Each element has a specific structure of nucleus and electron orbits. Because of this, when a certain element is ionized (ie. by a flame), the electrons rejoining with the nuclei give off a specific frequency of light. The color of light witnessed after burning the compound is an indicator of the elements present.
What are the limitations to a flame test?
· The test cannot detect low concentrations of most ions. · The brightness of the signal varies from one sample to another. For example, the yellow emission from sodium is much brighter than the red emission from the same amount of lithium. · Impurities or contaminants affect the test results. Sodium, in particular, is present in most compounds and will color the flame. Sometimes a blue glass is used to filter out the yellow of sodium. · The test cannot differentiate between all elements. Several metals produce the same flame color. Some compounds do not change the color of the flame at all. The flame test only works on certain molecules, more specifically the Alkali/Alkali Earth metals. It doesn't necessarily distinguish between compounds of these molecules neither.
Why cant the concentration of iron be detected by flame emission photometry?
Flame photometry can be used for the measurement of elements which can easily be excited like Ca, K, Na, Ba, Cu etc. However due to low temperature of flame the elements like Fe can not be excited and hence not measured using Flame photometry.
What analytical instruments can be used to identify the metal in a salt such as calcium carbonate?
Examples: emission spectrometry, flame photometry, atomic absorption, etc.
Why did each compound produce a flame of a different color?
Different elements have different emission spectra, meaning that if the electrons in an atom are excited, they will release that energy in different color of light. The flame color depends on the elements in the compound.
How does the chemical interference differ in inductively-coupled plasma mass spectrometry compared to flame?
Chemical interference occurs due to the absorbance/emission by molecules that did not break down into atoms. Inductively-coupled plasma mass spectrometry has less chemical interference as its hotter temperature breaks down everything into atoms.
Why is atomic emission more sensitive to flame instability than atomic absorption fluorescence?
Answer- Flames in atomic emission are more sensitive to flame instability because optimum excitation conditions vary widely from element to element. High temperatures are needed for excitation of some elements and low temperatures for others. The region of flame that gives rise to optimum line intensities varies from element to element. Flame is rarely use in atomic emission because atomization is more complete when using a plasma due to the production of high temperatures. Also the plasma helps reduce the ionization interference effects. In flame absorption, after the sample is nebulized by a flow of gaseous oxidant, mixed with a gaseous fuel and carried into the flame it is then atomized. Then some of the atoms in the gas ionize to form cations and electrons. In flame emission the sample is introduce with argon, carries the sample into the flame. The flame is suppose to atomize the sample, while the flow of gas takes the ions and electrons to be detected.
What color flame does potassium ions produce in a flame emission photometer?
potassium (K) produces a blueish purple flame
What information does a flame test provide?
The emission spectrum of an element
What information does flame test provide?
The emission spectrum of an element
What is a flame tested used for?
To identify an unknown sample by its emission spectrum
A list of situations in which flame emission spectroscopy is used?
Flame emission spectroscopy is commonly used in situations where the elemental composition of a sample needs to be determined. It is frequently employed in environmental monitoring to analyze trace elements in water and soil samples. It is also utilized in metallurgical and pharmaceutical industries, as well as in forensic analysis to identify the presence of specific elements in crime scene evidence.
What is a flame test?
Answer By exposing materials to a hot flame (from a Bunsen burner typically), the color of the flame can be used to identify the material. Certain elements give off a characteristic color when heated to high temperature. See the Related Links for "Wikipedia: flame test" to the bottom for the answer. A method of obtaining an emission spectrum from a sample
What is the flame test used for?
To indentify an unknown sample by its emission light
