Question

define avagadro's number and mention its value

Answer 1

hi friend
here's your answer looking for

Avagadro's number :-Avogadro number is a number of particles that is present in 1 mole of any substance.

this number is fixed number.

if you take the one mole of atom then you will find that there are
$6.022 \times {10}^{23}$
particles

and if you take the one mole of molecule then you will find that there are
$6.022 \times {10}^{23}$
particles

so, the value of this Avogadro number is
$6.022 \times {10}^{23}$
the Avogadro number is also known as Avogadro constant.

this value was experimentally found by the scientist named as amedeo Avogadro.

hope you are satisfied with my answer

Answer 2

¤¤¤ MOLE CONCEPT ¤¤¤

»» one gram of atom of any element contains the same number of atom and one gram of molecule of any substance contains the same number of molecules the number has been experimentally determined and found to be equal to 6.022137x10 ^23 correct upto 7
significant figures.

»» However the value generally used is 6.022x10^23 and is called Avogadro number or constant, it is denoted by N in owner Amedeo Avogardo.