Question

Why is 6.02 X 10^23 is also called as Avogadro's number?

Answer 1

It has been done in honor of Avogadro.

Explanation:

The Avogadro constant is named after the early 19th-century Italian scientist Amedeo Avogadro, who, in 1811, first proposed that the volume of a gas (at a given pressure and temperature) is proportional to the number of atoms or molecules regardless of the nature of the gas.[5] The French physicist Jean Perrin in 1909 proposed naming the constant in honor of Avogadro.[6] Perrin won the 1926 Nobel Prize in Physics, largely for his work in determining the Avogadro constant by several different methods.

From wikipedia: https://en.wikipedia.org/wiki/Avogadro_constant