The mass of a proton is approximately equal to that of
A
an \(\alpha\)-particle
B
a \(\beta\)-particle
C
\(\gamma\)-ray
D
an electron
E
a neutron
Verified Correct Answer: E.
Physical Principles & Numerical Solution
Protons and neutrons have approximately the same mass, about 1.67 \times 10\(^{-24}\) grams
Source: Myschool Past Questions Archive (Record #29025)