Copper has valency 2 in copper(II) nitrate. Its formula is

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Polyatomic Ions, Rules for Writing Chemical Formulae | PadhAiPro

Question

MCQ (Single)Polyatomic IonsRules for Writing Chemical Formulae

Give the chemical formulae for the following compounds and compute the ratio by mass of the combining elements in each one of them.

Write the molecular formulae for the following compounds

Write the molecular formulae for the following compounds

Write the molecular formulae of all the compounds that can be formed by the combination of following ions Cu²⁺, Na⁺, Fe³⁺, Cl⁻, SO₄²⁻, PO₄³⁻

Write the cations and anions present (if any) in the following compounds

Give the formulae of the compounds formed from the following sets of elements