How to write chemical formulas for compounds (Greek Numerals) ?

How would I convert specific compounds into their formula and vice versa??

examples:

Dichlorine Heptaoxide (<-turned into formula)

P(4)S(3) (<-turned into compound)

I know how to convert it without using the Greek names, so the 'Di', 'Hexi' and 'Tri' are throwing me off.

2 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    Dichlorine heptaoxide is Cl2O7

    P4S3 is tetraphosphorus trisulphide.

  • 1 decade ago

    Dichlorine Heptaoxide is not P4S3.

    Dichlorine Heptaoxide is Cl2O7.

    P4S3 is Tetraphosphorus Trisulfide.

    Mono = 1 (For example: CO= Carbon Monoxide)

    Di = 2 (Ex: CS2= Carbon Disulfide

    Tri = 3 (Ex: SO3= Sulfur Trioxide)

    Tetra = 4 (Ex: CF4= Carbon Tetrafluoride)

    Penta= 5 (Ex:PBr4= Phosphorus Pentabromide)

    It's like in math and the sides of the shape.

    I hope this is what you're looking for.

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