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    Oxide.

    • Last Update: 2020-11-23
    • Source: Internet
    • Author: User
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    The binary compound formed by oxygen and other
    is
    called oxide. With the exception of some rare gases, oxides of all elements have actually been produced. Depending on the criteria, there are several categories of oxides. (
    1) by
    acid-base
    sex, generally divided acidic oxides (e.g. sulfur trioxide), alkaline oxides (e.g. sodium oxide), biso-oxides (e.g. alumina) and unsalted oxides (e.g. nitric oxide). (2) By price bond characteristics, there are ionized oxides (e.g. sodium oxide) and co-priced oxides (e.g. carbon dioxide). (3) According to the crystal structure, there are infinite three-dimensional lattice oxides (e.g. titanium dioxide), laminate oxides (e.g. molybdenum trioxide), chain lattice oxides (e.g. chromium trioxide) and molecular structure oxides (e.g. carbon dioxide). There are often several different oxides of the same kind of elements, such as SO 2and
    SO


    3


    ,
    As


    2


    S

    3


    and
    As


    2




    5
    ,
    FeO, Fe

    br 2 br O and Fe br 3 br
    O

    4


    , etc. In
    3


    3




    4


    ,
    Fe has two different price states, generally regarded fe 3O4


    as
    FeO. Fe
    2
    O
    3
    ,
    X-ray
    study proved that it is an iron (III.) acid, the chemical is fe
    II.
    Fe


    III.


    .Fe 3 III.


    O4


    . It is thought that oxides are binary compounds formed by elements with less oxygen and electrodegeneration than oxygen. From this point of view, of

    2


    not oxides, but fluoride. There are also peroxides (e.g. sodium peroxide, hydrogen peroxide) and superoxides (e.g. potassium superoxide
    KO2


    ). Both peroxides and superoxides are highly oxidizing. Sometimes the meaning of oxides is more extensive, such as
    NiFe


    2 0 4


    ,
    YVO


    4
    ,
    Y3 Al 5 O 12called mixed oxides or polyoxides. There is also a class
    called
    organic oxides, such as
    C 2

    4


    O 2


    ethylene oxide or ethylene oxide,
    C 3 H 6 O is called epoxy propane or propylene oxide. The oxides of the elements in the same cycle decrease in alkalinity and increase in acidity with the increase of atomic order. The oxides of the same elements increase with the increase of atomic order, the alkalinity increases and the acidity decreases. When the same element forms different price-state oxides, the acidity of the oxides increases with the increase of the price state.




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