Which of the following is correct about atomic mass?
1
Atomic mass = Mass of one atom of an element / 1/24 mass of one carbon atom
2
Atomic mass = mass of one atom of an element / 1/10 mass of one carbon atom
3
Atomic mass = Mass of two atoms of an element / 1/12 mass of one carbon atom
4
Atomic mass = mass of one atom of an element / 1/12 mass of one carbon atom