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I know about quantum mechanical model of an atom and how electrons behave like a standing waves and there isn't any lower level energy available for electrons below ground state energy and energy comes in discrete packets and so on...
I am just having a hard time to imagine and understand that why electrons, which are negatively charged and nucleus of an atom which is positively charged, because of protons remains separated from each other .
I mean opposite charges attract each other; so why electrons just stay in there orbitals and not collapse in the nucleus which is positively charged ?
What is that force which keeps electrons in their orbitals and thus overcome the attractive force which is being applied by the protons ?