Question

atomi mass number........plzz give me the ans ​

Answer 1

Answer:

the atomic mass of all elements is the relative atomic mass compred with respect to an atom of carbon [c12]

Answer 2

Answer:

The mass number (symbol A, from the German word Atomgewcht [atomic weight]), also called atomic mass number or nucleon number, is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. ... The mass number is different for each different isotope of a chemical element.

Explanation:

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.