Question

The Structure of Atoms

1. What two sub-atomic particles are located in the nucleus of the atom?

2. What is the difference between the atomic number & the mass number of an element?

3. Where is the majority of the mass located in an atom?

Answer 1

1. protons and neutrons

2. the atomic number states the number of protons present and the mass number says the total number of protons and neutrons

3. nucleus

Step-by-step explanation: