Which two subatomic particles have the same relative mass?

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Multiple Choice

Which two subatomic particles have the same relative mass?

Explanation:
The masses of protons and neutrons are essentially the same. Both are nucleons with about 1 atomic mass unit each (proton ≈ 1.007 u, neutron ≈ 1.009 u), while electrons are much lighter—about 1/1836 of a proton’s mass. So protons and neutrons share nearly identical relative mass, making them the correct pair. The electron’s much smaller mass and the fact that two protons are the same type aren’t the focus here, which is why this pairing stands out.

The masses of protons and neutrons are essentially the same. Both are nucleons with about 1 atomic mass unit each (proton ≈ 1.007 u, neutron ≈ 1.009 u), while electrons are much lighter—about 1/1836 of a proton’s mass. So protons and neutrons share nearly identical relative mass, making them the correct pair. The electron’s much smaller mass and the fact that two protons are the same type aren’t the focus here, which is why this pairing stands out.

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