What are the main features of quantum mechanical model of an atom?

Explanation

Important features of quantum mechanical model of atom:
1) The energy of electrons in an atom is quantized (it can only have certain specific values).
2) The existence of quantized. electronic.energy levels is a direct result of the wave like properties at electrons and are allowed solution at schrodinger wave equations,
3) All the information about the electron in an atom is contained in its orbital wave function `.Psi.` and quantum mechanics makes it possible to extract this information from `.Psi.`.
4) The path of the electron can never be determined accurately. Therefore, we find only the probability of the electron at different points in space, around an atom.
5) The probability of finding an electron at a point within an atom is proportional to the square of the orbital wave function i.e., `|Psi|^(2)` at that point. `|Psi|^(2)` is known as probability density and is always positive. From the value of `|Psi|^(2)` at different points with in the atom, it is possible to predict the region around the nucleus where electron will most probably be found.