Which is the common ion when sodium sulfate is added to a solution of barium sulfate? na + ba 2+ so4 2 –?

The compound sodium sulfate is made of sodium ion and sulfate ion.

The formula can be written as Na₂SO₄.

The cation present in this compound is Na⁺ and the anion is SO₄²⁻.

The compound barium sulfate is made of barium ion and sulfate ion.

The formula can be written as BaSO₄.

This compound contains the cation Ba²⁺ and anion SO₄²⁻.

From the above , we can see that both the compounds have common anion which SO₄²⁻

So, the sulfate, SO₄²⁻ is the common ion when sodium sulfate is added to a solution of barium sulfate

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6