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NEETChemistrySome Basic Concepts of Chemistry

Why is the formula mass used instead of molecular mass for compounds like NaCl in the solid state?

Options

  1. ABecause the molecular mass is too large.
  2. BBecause the molecular mass is undefined.
  3. CBecause in the solid state, the compound does not exist as a single molecule.
  4. DBecause the molecular mass is not relevant for solid compounds.

Correct answer

C. Because in the solid state, the compound does not exist as a single molecule.

Step-by-step solution

In the solid state, compounds like NaCl do not exist as single entities or molecules, which is why the formula mass is used instead of the molecular mass.

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