Is atomic mass the sum of the number or mass of protons and neutrons.

1.	Is atomic mass the sum of the number or mass of protons and neutrons. If it is sum of number , then why is it called atomic MASS And if it is sum of mass then how do we know the no of neutrons and proton sin the atom.
Answer» Is atomic mass the sum of the number or mass of protons and neutrons. If it is sum of number , then why is it called atomic MASS And if it is sum of mass then how do we know the no of neutrons and proton sin the atom.

Is atomic mass the sum of the number or mass of protons and neutrons. If it is sum of number , then why is it called atomic MASS And if it is sum of mass then how do we know the no of neutrons and proton sin the atom.

Answer»

If it is sum of number , then why is it called atomic MASS

And if it is sum of mass then how do we know the no of neutrons and proton sin the atom.