IRT: http://groups.yahoo.com/group/mukto- mona/message/48029
JitenDa, looks like there is still a problem when you say, "In case of orbital electron, the electrostatic force is balanced by the centrifugal force (mv2/r), and there is no net force acting on the orbital electron along its tangential path." O.K. No tangential component of the force. You already have said that. What about radial component? Is that zero? That means no net force? Centripetal force is provided by the elctrostatic force. But who supplies the centrifugal force to beat the centripetal force? Answer is: nobody. Centrifugal force is a fictitious force. It cannot neutralize a real force. So it is the centripetal force furnished by the electrostaic force that keeps the electron busy revolving around the nucleus. Regards. -Subimal   __._,_.___
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