Question

what is the atomic number of an element. How does it differ from the mass number.​

Answer 1

Answer:

Explanation:

Atomic number is number of protons in the nucleas of an atom while Atomic mass is sum of Neutrons and protons in nucleas

Answer 2

Answer:

no of proton present in the nucleus of an atom of an element is the atomic no .

It is different from mass number because mass number is the sum of number of proton and neutron present in nucleus

and mass no of two different elements can be same but atomic no will be never same , it is unique. like mass no of argon and calcium is same 40