Which particles have a similar relative mass

a) atoms and electrons
b) protons and electrons
c) protons and neutrons
d) electrons and neutrons

c ) protons and neutrons

Explanation:

Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

explanation: