Question 1
Compare the properties of electrons, protons and neutrons?

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Solution

Properties of protons, neutrons, and electrons
Protons Neutrons Electrons
They are positively charged. They are neutral. They are negatively charged
They are present in the nucleus of all atoms They are present in the nucleus of all atoms except hydrogen They are present outside the nucleus of an atom in well-defined orbits
A proton is represented as “p” A neutron is represented as “n” An electron is represented as “e”
The mass of the proton is taken as one unit and equals the mass of a neutron The mass of the neutron is considered as one unit and it equals the mass of a proton The mass of an electron is only about 1/2000 the mass of a proton or neutron