Question

choose one correct answer in each drop - down list. the proton has a mass number of - select - and a charge of - select -. the electron has a mass number of - select - and a charge of - select -. the neutron has a mass number of - select - and a charge of - select -.

Explanation:

Protons have a mass number of 1 and a charge of +1. Electrons have a negligible mass (mass number close to 0) and a charge of - 1. Neutrons have a mass number of 1 and a charge of 0. These are fundamental properties of sub - atomic particles in chemistry.

Answer:

The proton has a mass number of 1 and a charge of +1.
The electron has a mass number of 0 and a charge of -1.
The neutron has a mass number of 1 and a charge of 0.