Respuesta :

IIIMG

Answer:

D less mass than a neutron

Protons have a mass of 1.67x10⁻²⁴ g

neutrons have a mass of 1.675x10⁻²⁴ g

electrons have a mass of 9.1x10⁻²⁸ g

So The mass of an electron is D.less than the mass of a neutron