Answered

Which two particles have approximately the same mass?
(1) proton and neutron
(2) proton and electron
(3) neutron and electron
(4) neutron and positron

Answer :

mack42502
2 and 3 because a neutron is neutral, a proton is positive, and a electron is negative. So they both have 0 and 1. (neutron and proton or electron)
Curti
The answer is 1)
protons and neutrons almost have the same mass
Both, positrons and electrons are lighter than protons and neutrons

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