Question

Avogadro number is:

• A. Number of atoms, one gram of element.
• B. Number of molecules present in one gram molecular mass of a substance.
• C. Number of molecules present in one gram of substance.
• D. All of these.

Answer 1

The correct option is B Number of molecules present in one gram molecular mass of a substance.

Number of molecules present in one gram molecular mass of a substance. so one mole substance = gram molecular substance=number of molecules=avagadro number