Explanation :
[tex]AgNO_3[/tex] is silver nitrate. In this compound, one atom of silver, one atom of nitrogen and three atoms of oxygen are present.
We know from the concept of mole concept that the number of molecules, atoms or ions present in a substance is known as one mole.
The number of particles in one mole of a substance is defined as Avogadro's number.
So, we can say that silver, nitrogen and oxygen are present in [tex]AgNO_3[/tex].
