Question 9
Which subatomic particle is the lightest?
Source table (mass in grams): electron $9.109\times10^{-28}$; proton $1.672\times10^{-24}$; neutron $1.675\times10^{-24}$.
Source table (mass in grams): electron $9.109\times10^{-28}$; proton $1.672\times10^{-24}$; neutron $1.675\times10^{-24}$.