Question

find the formula of sulphuric acid by criss cross method
answer it fast

Answer 1

hey
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symbol of hydrogen = H
valency = 1

symbol of sulphate = SO4
valency = 2

for the metals we use + sign
for nonmetals we use - sign

now refer to the attachment

•another name of suplhuric acid is hydrogen sulphate

•hence ans is H2SO4

hope helped
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