Question

a nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a(n)
isotope
electron
neutron
nuclide

Explanation:

Isotopes are different forms of an element with same number of protons but different neutrons. Electrons are negatively - charged and much lighter than protons. A nuclide is any atomic nucleus with a specific number of protons and neutrons. Neutrons have approximately the same mass as protons and are electrically neutral.

Answer:

C. neutron