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15 July, 13:50

The formula of an iodate of lanthanum is la (io3) 3. what is the formula of the sulfate of lanthanum with the same oxidation number

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  1. 15 July, 14:09
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    Iodate has a charge of - 1, this means its chemical symbol must be IO3 (-1) while Lanthanum is La (+3). Therefore making the compound La (IO3) 3.

    However sulfate has a chemical symbol of SO4 (-2), it has charge of - 2, therefore the formula for lanthanum sulfate is:

    La2 (SO4) 3
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