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Identify the incorrect formulae and corr...

Identify the incorrect formulae and correct them.
(a) `CaO_(2)` (b) `Mg_(2)S_(3)`
(c ) `FeO_(2)` (d) `PbO`
(e) `Ca_(3)S_(2)` (f) `PbS`
(g) `Zn_(2)O` (h) `Fe_(2)S`

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To identify and correct the incorrect chemical formulae from the given options, we will analyze each formula based on the oxidation states of the elements involved. ### Step-by-Step Solution: 1. **(a) `CaO_(2)`** - Calcium (Ca) has a charge of +2 and Oxygen (O) has a charge of -2. - To balance the charges, we need one Calcium atom and one Oxygen atom. - **Correct Formula:** `CaO` ...
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PEARSON IIT JEE FOUNDATION-LANGUAGE OF CHEMISTRY AND CHANGES AROUND US -TEST YOUR CONCEPTS (SHORT ANSWER TYPE QUESTIONS)
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  3. Identify the incorrect formulae and correct them. (a) CaO(2) (b) Mg(...

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  11. Define the following. Reversible change

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  12. Define the following. Periodic change

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  13. Define the following. Physical change

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