Question

1. A: The chemical formula of Ammonium sulpahte is (NH4)₂SO₄.

R: The valency of Ammonium ion is 4.

2. A: The chemical formula of magnesium oxide is MgO.

R: The valency of magnesium is 1.

3. A: Magnesium ribbon is cleaned before burning.

R: Magnesium ribbon will have aprotective layer of magnesium oxide.​

Answer 1

Answer:

1.A is the correct answer

2.A is the correct answer

Answer 2

here is your ans.

1) Ammonium sulpahte is (NH4)₂SO₄.

here valancy of NH4 Ion is +1

so, given statement is worng.

2) magnesium oxide :- MgO.

here valancy ( oxi . state) of mg is +2

so, given statement is worng .

3) ribbons which is made up of magnesium is cleaned before burning as it has a protective layer of Mgo.

so , given statement is correct.

hope it helps

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