Question

What is the difference between atomic weight, atomic mass, relative atomic mass and mass number?

Answer 1

Answer:

Atomic weight is the ratio of the average mass of a chemical element's atoms

Atomic mass is the mass of an atom of a particulat chemical substance

Relative Atomic mass is the ratio of the average mass of one atom

of an element to one twelfth of the mass of an atom carbon _12

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Answer 2

In chemistry weight and mass are considered same. Atomic weight is the weight of only one atom. For eg., weight of hydrogen atom is 1 u, where u is atomic mass unit and 1 u= 1.66×10^(-27) grams.

Relative means comparison so relative mass is ratio of masses.

Mass no. is the total number of protons and nuetrons. Since if mass no. of an atom is 14. Then, it's atomic mass will be 14 u due to this fact this number is called mass number.