Compare the properties of electrons, protons and neutrons.

Electron

Proton

Neutron

(i)

Electrons are present outside the nucleus of an atom.

(i)

Protons are present in the nucleus of an atom.

(i)

Neutrons are present in the nucleus of an atom.

(ii)

Electrons are negatively charged.

(ii)

Protons are positively charged.

(ii)

Neutrons are neutral.

(iii)

The mass of an electron is considered to negligible.

(iii)

The mass of a proton is approximately 2000 times as the mass of an electron.

(iii)

The mass of neutron is nearly equal to the mass of a proton.

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