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Molecular Formula

A metal carbo...

Question

A metal carbonate has a formula M₂CO₃. What is the formula of its oxide and chloride?

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Solution

M₂CO₃ , the formulas shows that, metal is univalent and as usual cabonate is bivalent whose valencies are shown.
So, since, chlorides have -1 charge thus, formula of metal chlorides will be MCl ( ex : NaCl)
Similarly, oxygen bears (-2) charge thus, formula of metal oxide will be M₂O ( ex: Na₂O) .

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