Question

1. which subatomic particle is identified by the atomic number? 15. why do atoms have a neutral charge? 16. the number of neutrons can vary for different atoms of the same element. what does the number of neutrons influence for an atom? 17. define isotope:

Explanation:

1. Protons are identified by atomic number.
2. Neutrons have no charge.
3. Isotopes have different neutron - counts.
4. Isotopes are atoms of same element with different neutron numbers.

Answer:

1. Protons.
2. Neutrons have no electric charge.
3. They are isotopes.
4. Isotopes are atoms of the same element with different numbers of neutrons.