Question

atomic mass= _____+ _____​

Answer 1

Explanation:

The atomic mass is the mass of an atom. Although the SI unit of mass is kilogram, the atomic mass is often expressed in the non-SI unit dalton where 1 dalton is defined as ¹⁄₁₂ of the mass of a single carbon-12 atom, at rest.

Answer 2

Answer:

proton + nutron

...........