Question 1. Compare the properties of electrons, protons and neutrons.
|Electrons are Negatively charged particles|
Electrons are present in outer shells with in an atom and revolve around the nucleus in well-defined orbits or discrete orbits
The mass of an electron is about 1/ 2000 times
the mass of an hydrogen atom.
A electron is represented as 'e-'
|Protons are Positively charged particles.|
Protons are present in the nucleus of all atoms
Number of protons determines the atomic number of an element
The mass of a proton is taken as one unit and equals to neutron.
A proton is represented as 'p+'
|Neutrons do not carry any charge and are neutral.|
Neutrons are present in the nucleus of all atoms, except hydrogen
The mass of a neutron is taken as one unit and equals to that of proton.
A neutron is represented as 'n'