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  • #15 Diatomic ions

    There are some atoms that want to achieve low energy (like stated in the octet rule) so bad that they just pair with another atom of the same kind. These are called diatomic ions. These are just certain non-metals that prefer to be in pairs until they can bond with another element that can satisfy the octet rule even more. There are only seven non-metals that do this:

    Diatomic Ions:
    H2
    N2
    O2
    F2
    Cl2
    Br2
    I2

    You really should remember these! Almost all of these elements in supply are diatomic ions. They must be talked about as if they are in diatomic form either before or after reactions if one of these elements might be by itself(not bonded to any other elements) .

    Each diatomic ion has it�s own, pretty easy to remember, name which is basically the element, plus the phase that element is in (solid, liquid, or gas):

    Diatomic Ion: Name:
    H2 Hydrogen gas
    N2 Nitrogen gas
    O2 Oxygen gas
    F2 Fluorine gas
    Cl2 Chlorine gas
    Br2 Bromine liquid
    I2 Iodine solid

    Just look upon it as a "7" on the periodic table, then plus hydrogen: Look at the blue seven!

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