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Chemistry CBSE Live product
Class 9 (2025-26)
Atoms and molecules
Annual Revision IV - Atoms and molecules
9.
Rules for writing chemical formula
Question:
3
m.
Give brief answers to the following question:
Write the molecular formulae of all the compounds that can be formed by the combination of following ions:
Cation
Anion
Molecular formula
\(Cu^{2+}\)
\(SO_4^{2-}\)
\(Cu_3(PO)_2\)
\(CuCl\)
\(CuSO_4\)
\(Cu_2SO_2\)
\(Na^+\)
\(Cl^-\)
\(NaCl_2\)
\(Na_2(SO)_4\)
\(NaCl\)
\(NaPO_3\)
\(Fe^{3+}\)
\(Cl^-\)
\(Fe(PO)_4\)
\(Fe_3(SO_4)_2\)
\(FeCl_2\)
\(FeCl_3\)
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