What is the symbol used to represent Avogadro's number.

Avogadro’s number is represented by the symbol NA.

Avogadro’s number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro’s number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance.

Avogadro’s number  = 6.022 × 1023 mol1