Question

what is called a mass number of a atom? ​

Answer 1

Answer:

The mass number is defined as the total number of protons and neutrons in an atom. The number of neutrons = mass number − atomic number.

Answer 2

Answer:

Today ,atomic mass of number can be determined very accurately with the help of an instrument called mass spectrometer..

I hope it helpful for you .........

Answer 3

Answer:

Today ,atomic mass of number can be determined very accurately with the help of an instrument called mass spectrometer..

I hope it helpful for you .........