Final answer:
A particle with three times the mass of an electron would have a mass of 27.33×10-31 kg. The question also touches upon comparisons with other subatomic particles and historical advancements in the field of particle physics.
Step-by-step explanation:
The question asks about a hypothetical particle with three times the mass of an electron. Given that the mass of an electron, me, is 9.11×10-31 kg, we can calculate the mass of this new particle as 3me, which would be 27.33×10-31 kg.
The rest of the question mentions other known particles and their masses for comparison, such as the proton having approximately 200 times the mass of an electron and the neutron being roughly equal in mass to the proton. The detailed physics at play here involves subatomic particles, their interactions, and how various experiments and advances, such as those achieved by James Chadwick, have expanded our understanding of particle physics.