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Anonymous users2024-02-10When the alkali metal and its salts are burned on the flame, the electrons in the atom absorb the energy and jump from the lower energy orbital to the higher energy orbital, but the electrons in the higher energy orbital are unstable and soon jump back to the lower energy orbital, at which point the excess energy is released in the form of light. The wavelength of the emitted light is in the visible range (wavelength 400nm to 760nm), so it can give the flame its color. However, due to the different atomic structures of alkali metals, the change of energy during the electron transition is not the same, and different wavelengths of light are emitted.
The spectrum of each element has some characteristic spectral lines, which emit a characteristic color to color the flame, and the presence of a certain element can be judged according to the flame color. For example, flame magenta contains strontium, flame jade green contains copper, flame yellow contains sodium, etc.
Sodium na yellow.
Lithium lichen red.
Potassium K light purple.
Rubidium rb violet.
Cesium CS purplish red.
Calcium ca, brick red.
Strontium SR magenta.
Cu green.
Barium ba yellow-green.
Noble gas discharge color.
He pink.
ne bright red.
AR violet.
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Anonymous users2024-02-09Cu green.
Barium ba yellow-green.
Other common: sodium na yellow.
Lithium lichen red.
Potassium K light purple.
Rubidium rb violet.
Cesium CS purplish red.
Calcium ca, brick red.
Strontium SR magenta.
Noble gas discharge color.
He pink.
ne bright red.
AR violet.
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Anonymous users2024-02-08Copper is green and potassium is purple (in blue cobalt glass).
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Anonymous users2024-02-07Ba ion yellow-green.
Cu ion green.
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Anonymous users2024-02-06This score is high enough
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Anonymous users2024-02-05Friends on the first floor, the color of potassium ions seems to be purple?!
How is it green, if there is something special, I hope to teach!
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Anonymous users2024-02-04Contains sodium elemental Na
Yellow contains lithium element li
Fuchsia contains potassium k
Light purple flame color reaction.
Observed through blue cobalt glass, because potassium is often mixed with sodium, yellow masks light purple) Rubidium contains the element RB
Purple contains calcium element ca
Brick red with strontium element SR
Magenta contains copper element Cu
Green contains barium element BA
Yellow-green contains cobalt element CO
Light blue magnesium, aluminum alloy MG+AL
White (Note: Contains ferrous element Fe
Colorless) lite version.
Potassium light purple calcium brick red.
Sodium, yellow magnesium, aluminum, none.
Barium yellow-green, copper-green.
Iron is non-lithium purple red.
Potassium purple sodium, yellow lithium purple red.
Rubidium: purple patina, barium yellow-green.
Calcium bricks, red strontium, magenta.
Cobalt light blue iron is colorless.
Note: This is very complete.
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Anonymous users2024-02-03The reason for the impurity of the solution is that it is doped with impurities of other elements, doped with copper cu green, or barium ba yellow-green.
The flame color reaction, also known as the flame color test and the flame color test, is a reaction that causes the flame to take on a special color when certain metals or their compounds are burned in a colorless flame. The principle is that each element has its own individual spectrum.
The flame color reaction is a physical change. It does not generate new matter, the flame reaction is a change in the energy level of the electrons inside the atoms of matter, which is commonly said to be the change of the electronic energy in the atom, and does not involve the change of the structure and chemical properties of the matter.
Some metals or their compounds can make the flame have a special color when it is burned carefully, and the existence of a certain element can be judged according to the flame color, such as the flame magenta contains strontium, the flame blue-green contains copper, the flame yellow contains sodium, the flame purple contains potassium, and the brick red contains calcium.
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Anonymous users2024-02-02The reason for the impurity of the solution is that it is doped with impurities of other elements, doped with copper cu green, or barium ba yellow-green.
Flame color reaction. Also known as flame color test and flame color test.
It is the reaction of certain metals or their compounds that causes the flame to take on a special color when it burns in a colorless flame. The principle is that each element has its own individual spectrum.
The flame color reaction is a physical change. It does not generate new matter, the flame reaction is a change in the electron energy level inside the atom of the substance, which is commonly said to be the change in the energy of the electron in the atom, and does not involve the structure and chemical properties of the matter.
of changes. Some metals or their compounds can give the flame a special color when burned, and the presence of a certain element can be judged according to the flame color, such as the flame magenta contains strontium, the flame blue-green contains copper, and the flame yellow contains sodium.
Flame purple contains potassium.
Brick red contains calcium.
Wait. <>
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Anonymous users2024-02-01Common flame color reactions:
Sodium na yellow.
Lithium lichen red.
Potassium K light purple.
Rubidium rb violet.
Cesium CS purplish red.
Calcium ca, brick red.
Strontium SR magenta.
Cu green.
Barium ba yellow-green.
Noble gas discharge color.
He pink.
ne bright red.
AR violet. The green you are talking about should be copper cu green, or barium ba yellow-green, but strangely enough, there are no two elements in the solution you are talking about. I think it may be the reason why the solution is not pure, and it may be doped with other elemental impurities.
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Anonymous users2024-01-31It can be determined that it is not a flame reaction, because the temperature cannot be reached, and the flame reaction can only be seen with an alcohol blowtorch, and the temperature can only be above 1000 degrees
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Anonymous users2024-01-30The flame color reaction is a reaction in which certain metals or their volatile compounds take on the characteristic color of a flame when it burns in a colorless flame.
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Anonymous users2024-01-29The flame color reaction Cu is green, and Ba is yellow-green. Just these two close.
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Anonymous users2024-01-28Will it contain a certain amount of Cu ions?
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Anonymous users2024-01-27Substances that emit white light when burned are: charcoal in oxygen, paraffin in oxygen, and magnesium in air.
Combustion produces a faint blue flame of hydrogen in the air and sulfur in the air.
Combustion produces blue-purple flames: sulfur in pure oxygen.
Combustion produces a blue flame with a base of spring: carbon monoxide (CO), methane.
Combustion produces white smoke: phosphorus in the air or oxygen.
The forest blindness with white fog is: concentrated hydrochloric acid can form white fog in the air. Nitric acid is also prone to white haze.
Combustion of carbon dioxide and water produces organic matter such as CH4, paraffin, C2H5OH, CH3OH, etc.
The main purpose of observing with blue cobalt glass is to exclude the interference of sodium, that is, to exclude yellow, for other color interference, because in general, most of the impurities contained in potassium and potassium-containing compounds are substances containing sodium, and only a small part are other elements, so their influence is not considered.
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The flame color reaction is a reaction in which certain metals or their volatile compounds take on the characteristic color of a flame when it burns in a colorless flame. Some metals, or their compounds, can give a special color to the flame when burned. >>>More
The flame reaction is an elemental property. It is a light phenomenon caused by the jump of electrons in an atom. >>>More
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