Answer:
Isotope of carbon-12.
Explanation:
The MOLE is a unit of measurement of the amount of a pure substance which contains exactly the same number of chemical units which could be (Atoms, molecules etc.) posses atoms in exactly [tex]12[/tex] grams of isotope of carbon-12 (i.e., [tex]6.022\times 10^{23}[/tex]).
So, The mole is the Notation used for an amount [tex]6.022\times 10^{23}[/tex] as same the 12 number is used for dozen for making count of Bananas and many more.
The [tex]6.022\times 10^{23}[/tex] is known as the fundamental constant names Avogadro's number ([tex]N_{A}[/tex]), It is in the honor of Italian scientist Amedeo Avogadro.
