What color is Mn manganese? What color is the Mn element

Silvery-white metal, hard and brittle. Density grams of cubic centimeters. Melting point 1244, boiling point 2097.

Valencies +2, +3, +4, +6 and +7. Among them, +2 (compound of Mn2+), +4 (manganese dioxide, which is a natural mineral), +7 (permanganate, such as KMno4), and +6 (manganate, such as K2mnO4) are stable oxidation states. In the solid state it exists in four allotropic forms, Manganese (body-centered cube), Manganese (cube), Manganese (face-centered cube), δ manganese (body-centered cube).

The ionization energy is electron volts. It is easily oxidized in the air to form a brown oxide covering. It is also susceptible to oxidation when the temperature rises.

When oxidized, a layered oxide rust scale is formed, and the oxide layer closest to the metal is MNO, while the outer layer is Mn3O4. When oxidized at temperatures above 800, the thickness of the MNO gradually increases, while the thickness of the Mn3O4 layer decreases. A third oxide layer, Mn2O2, appears below 800 degrees.

Below about 450 the outermost fourth layer of oxide Mno2 is stable. It can decompose water, is easily soluble in dilute acid, and has hydrogen gas released to generate divalent manganese ions. There are some big differences between manganese and manganese ore.

Manganese is a silvery-white metal.

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Silvery-white metal, but its various ions are different in color, Mn2+ colorless, MnO7-violet, MnO72-green, MnO2 black.

The color of pure metal solid elements is generally silver white or rigid gray, with the exception of copper, gold and cesium.

Some metals are black or other colors, and that is because the surface is oxidized or contains impurities.

The Chinese name of the MN element is manganese, and its atomic number is 25, which is a transition metal. Manganese elements are grayish-white, brittle and hard, and will oxidize in wet places.

Metallic manganese (MN) profile BAI

Iron-like, dense manganese metal is silvery-white, powdery dao is gray.

The use of pure manganese is not much, but its alloy is very important.

The colors of its compounds are commonly found as follows:

Valence compounds: mn(OH)2--- white; MNO(OH)2--- brown; MnCl2·4H2O, Mn(NO3)2·6H2O, Mn(ClO4)2·6H2O--- pink, MnSO4--- white.

Valence compound: MnO2--- black.

Valence compounds: K2mNO4--- dark green;

Valence compound: KMno4--- dark purple crystal. Permanganate anhydride Mn2O7 --- green oily.

Manganese Mn: Silvery-white metal, copy is easily oxidized in the air to form a brown oxide covering. Manganese tetroxide is formed when burned.

When red-hot, it reacts with water to form manganese tetroxide and hydrogen. Soluble in dilute hydrochloric acid, dilute sulfuric acid to form divalent manganese salt. At high temperatures, it is directly combined with halogens, sulfur, phosphorus, carbon and nitrogen.

Black manganese ore Mn3O4: black, brownish-black. Semi-metallic luster. Soluble in hydrochloric acid and precipitate chlorine, it is used to prepare potassium permanganate, manganese sulfate, manganese carbonate, manganese nitrate, manganese monoxide, etc.

Brown manganese ore 3mn2o3·mnsio3: black, gray-black, brown-black to steel-gray. Semi-metallic luster. Soluble in hydrochloric acid and precipitate chlorine. It is a mineral raw material for manganese refining. It is used to prepare potassium permanganate, manganese sulfate, manganese carbonate, manganese nitrate, manganese monoxide, etc.

Manganese carbonate MnCO3: rose-colored triangular rhombic crystals or amorphous bright white-brown powder. It is almost insoluble in water and slightly soluble in water containing carbon dioxide.

Soluble in dilute inorganic acids, slightly soluble in ordinary organic acids, insoluble in alcohols and liquid ammonia. Stable in dry air. When wet, it is easy to oxidize, forming manganese trioxide and gradually turning brown and black, and liberating carbon dioxide when heated.

It is hydrolyzed when it is azeotropic with water. In boiling potassium hydroxide, manganese hydroxide is generated.

There is a layer of colorful glaze on the surface of the ceramic surface, and the processing method is to add some DAO metal elements to the ordinary glaze, and control the amount of air (that is, the amount of oxygen used) when the plate is fired to obtain different colors. If the air is insufficient, the colors of the compounds formed by iron, copper, and manganese are respectively.

Detailed instructions.

MN has a lot of meaning:

Meaning million. 1mn is equal to 1 million people.

Mongolia is the abbreviation of Mongolia;

MN stands for manganese element, which has an atomic number of 25 and is a transition metal. Manganese elements are grayish-white, brittle and hard, and will oxidize in wet places.

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What does the pro, mn antonym mean? : The antisense of beauty. or MN is an abbreviation for million.

Or the greater the granularity, the more complete the content information reflected in the photo. Main information: SLR digital camera refers to single-lens reflex digital camera, that is, digital digital, single, lens lens, Reflex reflex English abbreviation DSLR.

Representative models in the market are commonly found in Nikon, Canon, Pentax, Fujifilm, etc. These cameras are generally larger and heavier. SLR stands for Single Lens Reflex, which is the most popular viewfinder system available today and is used in most 35mm cameras.

In this system, the unique design of the mirrors and prisms allows the photographer to observe the image passing through the lens directly from the viewfinder. As a result, the same image that the film is about to "see" can be seen accurately. The heart of a DSLR system is a movable mirror that is placed at a 45° angle in front of the film plane.

The light entering the lens is reflected upwards by the mirror onto a piece of ground glass. To correct this defect, today's eye-level SLR cameras have a pentaprism mounted on top of the ground glass. This kind of prism reflects the light several times to change the optical path, and sends the image to the eyepiece, at which point the image is upright and corrected left and right.

When framing, most of the light entering the camera is reflected upwards by the mirror to the pentaprism, and almost all SLR cameras have a shutter directly in front of the film (called a focal plane shutter because it is in the film plane), and the shutter is closed when framing, so that no light reaches the film. When the shutter button is pressed, the mirror quickly flips up to open the light path, and the shutter opens at the same time, so that the light reaches the film and the shot is completed. The mirrors in most cameras then reset immediately.

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Manganese, whose chemical symbol is Mn, has an atomic number of 25, is off-white, and is a transition metal, which is hard and brittle, and will oxidize in wet places.

Manganese is a silvery-white metal that is hard and brittle. It belongs to the VIIB group of elements. Density grams of cubic centimeters.

The melting point is 1244, and the boiling point of manganese metal (glass seal) is 1962. In the solid state it exists in four allotropic forms, Manganese (body-centered cube), Manganese (cube), Manganese (face-centered cube), δ manganese (body-centered cube). The ionization energy is electron volts.

In 1774, Gann isolated the metal manganese. Bergman named it manganese. Manganese can be prepared by reducing pyromanganese by thermite.

Silvery-white metal, hard and brittle. Density grams of cubic centimeters. Melting point 1244, boiling point 1962. In the solid state it exists in four allotropic forms, Manganese (body-centered cube), Manganese (cube), Manganese (face-centered cube), δ manganese (body-centered cube).

MN is an abbreviation for Million; RMB million, or 44.89 million RMB.

million English [.]'m lj n] beauty ['mɪljən]

n.Million; Countless.

adj.millions; Numberless.

num.Million;

n.(million) personal name; (Fa, Roe, Ethiopia) Milion.

Same root word: root: million

adj.millionaire with a population of more than 1 million.

millionfold.

millionth millionth; The millionth.

adv.millionfold.

Millionaire; Big Rich.

millionairess millionaires; Millionaire's wife.

millionth millionth; The millionth.

Example sentence: 1. america imports about 190 million pounds of tea a year

The U.S. imports about 100 million pounds of tea each year.

2、the new shopping centre was constructed at a cost of million.

The new mall was built at a cost of $1.1 million.

3、ballpark estimates indicate a price tag of $90 million a month.

The approximate estimated cost is $90 million per month.

Meaning million. It is equivalent to RMB 44.89 million.