Question

chemical formula using criss-cross method 1)ammonium sulphate

Answer 1

Hey mate your answer is here

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(NH4) (So4)
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valency=1 valency=2
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criss cross over valency
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(NH4)2(So4)1

or

(NH4)2(So4)
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hope this will helps you mark as brainliest pls
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if u have any doubts consult me