Question

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what is the formula for atomic mass? ​

Answer 1

Atomic mass Number = Number of protons + number of neutrons

Answer 2

Answer:

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.

Atomic mass Number = Number of protons + number of neutrons