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Per NCERT, for IONIC compounds like NaCl, why do we use the term 'FORMULA MASS' instead of 'molecular mass'?
ABecause NaCl is liquid
BBecause NaCl exists in crystal lattices (not as discrete molecules), so the formula represents the ratio of ions rather than a molecule
CBecause ions have no mass
DBecause Na is heavier than Cl
Answer & Solution
Correct answer: B. Because NaCl exists in crystal lattices (not as discrete molecules), so the formula represents the ratio of ions rather than a molecule
Per NCERT §1.7.3, ionic compounds use 'formula mass' since they don't form discrete molecules.
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