the compound which is formed by thr combination of a polyatomic anion and a monoatomic cation (with 3 units positive charge) is 1. magnesium sulphate 2aluminium sulphate 3. aluminium sulphide 4.magnesium sulphide
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the compound which is formed by thr combination of a polyatomic anion and a monoatomic cation (with 3 units positive charge) is 1. magnesium sulphate 2aluminium sulphate 3. aluminium sulphide 4.magnesium sulphide
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The compound which is formed by the combination of a polyatomic anion and a monoatomic cation (with 3 units positive charge) is option 2, aluminium sulphate (Al2(SO4)3).
Aluminium sulphate is a salt composed of a polyatomic sulfate anion (SO4^2-) and a monoatomic aluminium cation (Al^3+), which has a charge of three positive units. The aluminium cation combines with three sulphate anions to form the compound Al2(SO4)3.
Magnesium sulphate (MgSO4) is also a salt composed of a polyatomic sulfate anion (SO4^2-) and a monoatomic magnesium cation (Mg^2+), which has a charge of two positive units.
Aluminium sulphide (Al2S3) and magnesium sulphide (MgS) are both binary compounds formed between a metal cation and a nonmetal anion, but they do not involve polyatomic anions.