Question

what do you mean by atomic number and mass number​

Answer 1

Answer:

Neutral atoms of each element contain an equal number of protons and electrons. The number of protons determines an element's atomic number and is used to distinguish one element from another. ... Together, the number of protons and the number of neutrons determine an element's mass number

Answer 2

Explanation:

The atomic number is the number of protons in the nucleus of an atom.

The mass number is defined as the total number of protons and neutrons in an atom