Question

Chemical formula of potassium sulphate in criss cross method

Answer 1

Its K2SO4
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Answer 2

Answer:

The formula for Potassium Sulphate is K₂SO₄

Explanation:

• Potassium Sulphate is an ionic compound
• Potassium is a metal and is in 1st group of periodic table  and has symbol K and sulphate is a polyatomic ion with charge 2- and is represented as SO₄²⁻
• We can write positive and negative parts separately with charges.                            

                            K¹⁺                 SO₄²

•  Next we criss cross and put 1 from K and put it  as subscript next to  SO₄. We take 2 from SO⁴ and put it as subscript next to K.(1 subscript in chemical formula is usually not written)
• The chemical formula of Potassium sulphate is K₂SO₄.