Newtonian Mechanics don't work in the quantum world. Quantum objects are very microscopic that they can't be located but they can be probably located. And this probability can be determined by using wave functions of the quantum particles Wave function gives us the probabilities of where the electron is likely to be. The act of not knowing where the electron is, allows its probability distribution to be spread out over a large space kind of wave. Therefore wave function is the function which describes the wave shape of the probability distribution of the electron . The Heisenberg Uncertainty principle says that we can't predict the exact position and momentum of the quantum objects. But we can know about things like Energy levels and wave functions. THE SCHRODINGERS WAVE EQUATION : ...
Physics tit-bits