Answered

Which particle has a mass of approximately 1 atomic mass unit?

Aan alpha particle
Ba beta particle
Can electron
Da neutron

Verified Answer :

The answer is D) a neutron.

When we say an atom's mass is, like 5 atomic mass units actually we are saying that the total number of the neutrons and protons in its nucleus is 5.

The mass of a neutron and a proton is each one atomic mass unit.

Mass of a neutron is approximately 1 atomic mass unit.

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