We have learnt how electrons involve in stabilisation of an atom. What’s about Proton? Has there been no role for them? Has there been any way to express the number of protons in an atom? The answer is “YES”. Protons and neutrons are also known as the nucleons.
The number of protons in the nucleus is known as the atomic/proton number of the particular element. It is conventionally represented by the symbol Z. It is the proton/atomic number (Z) that determines the number of electrons, specific electron structure and the specific identity of an element in terms of its physical and chemical properties. Since an atom having no charge, means the number of electrons must be equal to the number of protons that is the atomic number. Hence, in an atom the atomic number is also equal to the number of electrons. Read Complete Story