Question

What is the value of Avogadro's number?

Answer 1

Avogadro number:

• It is the number of atoms, molecules, and ions in one gram of atom of an element, one gram molecule of a compound, and one gram ion of a substance respectively.

Representation of Avogadro number:

• Avogadro number is represented by the symbol “${\mathrm{N}}_{\mathrm{A}}$”.

Value of Avogadro number:

• Its SI unit is the reciprocal of the mole and its value is ${\mathrm{N}}_{\mathrm{A}}=6.022\times {10}^{23}{\mathrm{mol}}^{-1}$, named after the Italian scientist Amedeo Avogadro.
• This is called the Avogadro constant (or number).