Question

An atom has 10 protons and
neutrons and hence its atomic mass
number is 22. *​

Answer 1

Answer:

Fundamental properties of atoms including atomic number and atomic mass. The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.

Answer 2

Answer:

An atom has 10 protons and 12 neutrons and hence the its atomic mass number is 22