The content reason of metallic iron is simple

The content reason of metallic iron is simple
The opposite atomic mass of iron 56, the density of iron is 7.9 grams / cubic centimeter.

Iron is vivid, for strong recover from an illness agent, chemical combination price has 0, + 2, + 3, + 6, the commonnest valence form is + 2 and + 3. Below room temperature, iron cannot go out from the displacement in water hydric, in 500 ℃ above response rate increases. Its compound and its aqueous solution contain colour normally.

Iron follows aerobic reaction very hard in as dry as a chip air, but very incidental in humid air electrochemistry is corroded, if be in acidity gas or be in brine or corrode in haloid steam air faster. Iron can recover from an illness from inside solution gold, platinic, silver-colored, mercuric, copper or stannic plasma.

The specific heat capacity of iron ℃ of · of 0.46 × 10^3J/(kg) , temperature of every kilogram iron lifts or drop to one Celsius is absorbed or emit quantity of heat 0.46 × 10^3J. Melting point: 1535 ° C, boiling point: 2750 ° C. . Colour and lustre: Pure iron has burnish of silvery white metal, condition: Solid, hardness: Qualitative soft, density: 7.8g/cm3, extend a gender crackajack, conductibility (electric, heat conduction) good. The melting point of pure iron should be 1534 ℃ , if be the alloy of iron and other metal,be the iron that mix into has foreign matter probably nevertheless, melting point drops, hardness will increase, so specific that view foreign matter probably the property of alloy.

Iron has the physical general character of metallic crystal not merely, and can by magnet attract, below the action of magnetic field, iron itself is magnetized.

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