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CASE_STUDIESLaw of Conservation of Mass in Chemical ReactionsPolyatomic IonsFormula Unit Mass for Ionic CompoundsLaw of Conservation of Mass in Chemical ReactionsFormula Unit Mass for Ionic CompoundsNCERT Exemplar4 sub-questions

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An element 'X' forms an oxide with formula X₂O₃

CASE_STUDIESChemical Formula of CompoundsFormula Unit Mass for Ionic CompoundsValence Electrons and Valency

Imagine you are a chemist working in a laboratory that specializes in analysing and identifying chemical compounds. One day, a colleague asks for your help to determine the cations and anions present in several compounds they are working with. Analyse the following compounds and identify the cations and anions present (if any): (a) KBr (b) CaCO₃ (c) O₂ (d) MgSO₄