Question

What properties do protons and electrons share

Answer 1

Protons and Electrons charges are the exact same size.

Answer 2

Charge and spin

Step-by-step explanation:

Your instructor is probably expecting you to say "charge ".

In one sense that is correct. Both particles have a charge, but that on a proton is 1+ while on an electron it is 1-.

There is one property they have in common that is identical: they both have spin ½.