1.

Write the chemical formulae of the compounds formed by the following lons: (a) Mg^(2+) and S^(2-) (b) Cu^(2+) and OH^(-) (c) Al^(3+) and Br^(-)

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Solution :(a) `Mg^(2+)` and `S^(2-)`: MgS (b) `CU^(2+)` and `OH^(-)` : `Cu(OH)_(2)` (C) `AL^(3+)` and `BR^(-)` : `AlBr_(3)`


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