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24 January, 01:43

What do parentheses around a group of atoms in a chemical formula indicate?

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  1. 24 January, 05:34
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    Lets look at the example

    Cu (SO4) 2

    SO4 means 1 atom of S and 4 atoms of O

    (SO4) 2 means 2*1 atom of S and 2*4 atoms of O, so we get

    2 atoms of S and 8 atoms of O.
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