Question

give the formula of the comounds:- 1) sodium oxide, 2) calcium nitrate, 3)copper sulphate, 4) sodium nitrate 5) Magnesium hydrogencarbonate, 5) manganese sulphate. Please answer to my question fast please Iam In hurry.

Answer 1

1-Na20
2-Ca(NO3)2
3-CuSO4
4-NanO3
5-MG(HCO3)2
6-MNSO4

Answer 2

(1) sodium oxide : $Na_2O$ [ it is because oxidation state of sodium ion +1 and oxidation state of oxygen ion -2. for no charge in compound, it needs two Na and one O]

(2) calcium nitrate : $Ca(NO_3)_2$ [ oxidation state of calcium ion = +2 and oxidation state of nitrate ion , $NO_3^-$=-1[/tex]

(3) copper sulphate :$CuSO_4$ [ here oxidation state of copper ion = +2 and oxidation state of sulphate ion = -2]

(4) sodium nitrate, $NaNO_3$[here oxidation state of sodium ion = +1 and oxidation state of nitrate ion = -1 ]

(5) magnesium hydrogen carbonate, $Mg(HCO_3)_2$ [ here oxidation state of Mg ion = +2 and oxidation state of bicarbonate or hydrogen carbonate ion = -1 ]

(6) manganese sulphate, $MnSO_4$ [here oxidation state of Mn ion = +2 and oxidation state of sulphate ion = -2 ]