Question

how to calculate valency of polyatomic ions such as OH,SO4. if any body have courage then tell but to wrong answers I will report and block only right answer.Kisme dam he salo batao

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Answer 1

Answer:

oh= -1 , so4= -2

Explanation:

The trick is to remember their compounds,

for example, NaOH- as Na has valency 1 , so OH will also have valency 1

H2SO4- as H has valency 1 and is having a subscript 2 so valency of SO4 will be 2.

Since both are anions they are accompanied with a '-' sign.

hope this helped you....

MARK BRAINLIEST