Question

11. Define the following terms: a) Atomic number b) Mass number

Answer 1

Atomic Number :

The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element. For example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1.

Mass Number :

the total number of protons and neutrons in a nucleus.

Answer 2

Answer:atomic number means protons in a nucleus and atomic mass means sum of proton and neutron in a nucleus

Explanation: