Flame Tests Electron Configuration: Fill & Download for Free

Beryllium and magnesium belongs to group 2 of s block elements ..they have electronic configuration of ns^2And are strongly bounded that can't easily get excited by flame and high ionization energy ..So, theh donot show flame test

The principle associated with flame coloration is is excitation of electrons from ground state energy level to a higher state energy level by providing heat energy associated with flame.When a metal is heated after absorbing energy the excitation of electron can be given byAs electrons move to the higher energy level becomes unstable and fall back to the ground state energy level. while falling back to ground state energy level the absorbed energy is emitted out. The energy which is emitted out corresophds to a specific wavelength given by formulaIf wave length of the emitted radiation falls in visible region (i.e 400 nm to 800 nm) then it can be seen through naked eyes.e.g alkali and alkaline earth metals give characteristic flame testDifferent elements give different flameconsidering example of potassium and calcium their electronic configurations arewhen they are heated over flame the energy supplied to potassium is completely absorbrd by a single valance electron so its excitation is to a higher energy level as it falls back it emits out violet color. But in case of calcium there are two valance electrons so energy supplied is distributed between these two electrons so excitation is not to a higher energy level so when they fall back to ground state energy level the show buff red colorthe formulas forthus the salts in the bottles can be detectedThe stones which show color at fire place are containing cations which have characteristic flame test

The flame test is a crude analytic tool where a substance of unknown identity and/or characteristics is placed over a flame. Depending on the identity of the chemical, various things can happen when exposed to high heat.Most organic compounds will ignite or decompose in some manner or other. The real fun comes in when testing metals or salts (solid ionic compounds. ) Unless the metal has a very low melting point or the salt is unstable at high temperature, the substance will not be completely consumed or altered by the flame. Depending on the metal or the metallic portions of the substance, the flame can change colors!We know that elements absorb and release energy in predictable, prescribed amounts. We say that this energy is quantized. When the flame hits the substance, electrons absorb some of this energy, causing them to “jump” to a higher energy level. However, this excited state is not stable so the electrons quickly “jump” back down, releasing the energy in the form of a photon.The wavelength of said photon depends on where the electron dropped from and to. And where the electron travelled is based on the electronic configuration of the substance. And because we can figure out the electron configuration of a substance, we can use the color of the flame to help us figure out what the unknown substance is! Transition metals are the best for this type of test because they can make some of the most brilliant colors.Here's the cool part, we have learned the full spectrum of emissions that elements and compounds can create by electrons jumping up and down. Therefore, with fancy mechanical eyes that can discern the exact wavelength of light rather than just a general color (spectrophotometers,) we have gotten really good at figuring out what substances are based solely on “color.” We have used it to determine the elemental make-up of our star and how it compares to other stars. We can use it to analyze what gases make up Jupiter's atmosphere. We use it at my lab in assays to determine if you possess a certain antibody to a particular disase.Spectrophotometry is one of the most powerful analytic tools we possess. The flame test is a simplified tool that illustrates the concept.BTW even substances that react with the flame give off predictable emissions of light, but not as easily analyzed via a simple flame test with the human eye as the analyzer.Sorry in advance for typos, wrote this on my phone.