Tue February 05, 2013 By: Keerthi

s orbital

Expert Reply
Wed February 06, 2013
The orbital itself does not have any charge. What we are talking about is electrons. So, the reason here is same as for electrons.
The force that attracts the electron towards the nucleus is the coulomb's force of attraction , therefore when electron is acted upon by this attraction force , it starts falling towards the nucleus in the sense that it keeps failing from taking the straightline path it otherwise would have taken in the absence of external force , thus it on the otherside rotates around the nucleus preserving the minimum quanta of energy it can hold in its state.Since there is a minimum 'quanta of energy' of the atomic orbital the wavefuntion of electron satisfies , it remains in that state and doesnot fall.
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