Question

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass

Answer 1

according to experiment,
mass of proton ≈ 1.6726 × 10^-27 Kg
mass of electron ≈ 9.109 × 10^-31 Kg
mass of neutron ≈ 1.6749 × 10^-27 Kg

here we can see that mass of proton ≈ mass of neutron.

therefore, An atom contains one proton , one electron and one neutron then, mass of proton is similar in mass of neutron.

Answer 2

Answer:

The proton and neutron

Explanation:

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

the neutron and the electron

the proton and the electron

<>  the proton and the neutron

the neutron and the atom