Chemistry · Chemical Formulae
According to IUPAC nomenclature rules for writing chemical formulas of ionic compounds, why is the formula for sodium chloride written as NaCl and not ClNa?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The element that is gaseous at room temperature must be written last.
- 2The element with the higher atomic number must be written first.
- 3Chlorine is lighter than sodium, hence written at the end.
- 4The symbol of the metallic/cationic element is written first.✓
Correct answer
The symbol of the metallic/cationic element is written first.
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