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livoniabulldo livoniabulldo
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12 years ago
Example; say Aluminum Sulphate. How come the formula isn't Al2SO3 (if 2 and 3 are subscripts) Is there an easy method of remembering how to do this easily?
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wrote...
12 years ago
sulfate is SO4^2-
aluminum is Al3+
You have to switch the charges and since that results in sulfate being multiplied by 3, you have to put the entire polyatomic ion in parenthesis.
Al2(SO4)3
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