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18 October, 04:15

Why potassium bromide is KBr but pitassium oxide is K2O

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  1. 18 October, 06:05
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    The charge of the K ion is + 1, and the charge of Br is - 1, so they have a one to one ratio in order to balance out the charges. The charge of Oxygen, O, is - 2, so in order for the charges to balance out to zero there have to be 2 K.
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